To see the other types of publications on this topic, follow the link: Creepers.
Journal articles on the topic 'Creepers'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 50 journal articles for your research on the topic 'Creepers.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.
1
Epstein, Ari W. "Jeepers, Creepers." Scientific American 261, no. 3 (September 1989): 33–34. http://dx.doi.org/10.1038/scientificamerican0989-33.
Full text
2
Reding, Dawn M., Jeffrey T. Foster, Helen F. James, H. Douglas Pratt, and Robert C. Fleischer. "Convergent evolution of ‘creepers’ in the Hawaiian honeycreeper radiation." Biology Letters 5, no. 2 (December 16, 2008): 221–24. http://dx.doi.org/10.1098/rsbl.2008.0589.
Full textAbstract:
Natural selection plays a fundamental role in the ecological theory of adaptive radiation. A prediction of this theory is the convergent evolution of traits in lineages experiencing similar environments. The Hawaiian honeycreepers are a spectacular example of adaptive radiation and may demonstrate convergence, but uncertainty about phylogenetic relationships within the group has made it difficult to assess such evolutionary patterns. We examine the phylogenetic relationships of the Hawaii creeper ( Oreomystis mana ), a bird that in a suite of morphological, ecological and behavioural traits closely resembles the Kauai creeper ( Oreomystis bairdi ), but whose mitochondrial DNA (mtDNA) and osteology suggest a relationship with the amakihis ( Hemignathus in part) and akepas ( Loxops ). We analysed nuclear DNA sequence data from 11 relevant honeycreeper taxa and one outgroup to test whether the character contradiction results from historical hybridization and mtDNA introgression, or convergent evolution. We found no evidence of past hybridization, a phenomenon that remains undocumented in Hawaiian honeycreepers, and confirmed mtDNA and osteological evidence that the Hawaii creeper is most closely related to the amakihis and akepas. Thus, the morphological, ecological and behavioural similarities between the evolutionarily distant Hawaii and Kauai creepers represent an extreme example of convergent evolution and demonstrate how natural selection can lead to repeatable evolutionary outcomes.
3
Marini, Kristen L. D., Sarah Nadon, and Jennifer R. Foote. "Dawn singing in Brown Creeper (Certhia americana)." Canadian Field-Naturalist 134, no. 2 (September 21, 2020): 117–24. http://dx.doi.org/10.22621/cfn.v134i2.2139.
Full textAbstract:
The dawn chorus of birds is an impressive display in which many individuals of a variety of species sing concurrently before sunrise. Brown Creeper (Certhia americana) is a small passerine bird that has not been well studied and is thought not to sing during the dawn chorus. Here, we used automated recordings to analyze Brown Creeper singing during the 2015–2017 breeding seasons from April through August in order to identify patterns in the timing and quantity of singing. We found that Brown Creepers did sing before sunrise, most often between April and early June and then more sporadically through mid July. We did not find any seasonal changes in song rates before sunrise, but we did find non-linear seasonal trends in both the timing and total duration of dawn singing bouts. Dawn choruses began earlier and lasted longer from April through mid June after which they began later and became shorter. Our results highlight the benefit of using automated recording techniques to study natural history of difficult to study species and add to our understanding of Brown Creeper natural history.
4
Robberds, Mark. "The New Historicist Creepers ofVineland." Critique: Studies in Contemporary Fiction 36, no. 4 (June 1995): 237–48. http://dx.doi.org/10.1080/00111619.1995.9935255.
Full text
5
Angelone, Steven, Iván Piña-Torres, Israel Padilla-Guerrero, and Michael Bidochka. "“Sleepers” and “Creepers”: A Theoretical Study of Colony Polymorphisms in the Fungus Metarhizium Related to Insect Pathogenicity and Plant Rhizosphere Colonization." Insects 9, no. 3 (August 17, 2018): 104. http://dx.doi.org/10.3390/insects9030104.
Full textAbstract:
Different strains of Metarhizium exhibit a range of polymorphisms in colony phenotypes. These phenotypes range from highly conidiating colonies to colonies that produce relatively more mycelia and few conidia. These different phenotypes are exhibited in infected insects in the soil. In this paper, we provide a theoretical consideration of colony polymorphisms and suggest that these phenotypes represent a range of strategies in the soil that Metarhizium exhibits. We call these different strategies “sleepers” and “creepers”. The “sleeper” phenotype produces relatively greater amounts of conidia. We use the term “sleeper” to identify this phenotype since this strategy is to remain in the soil as conidia in a relatively metabolically inactive state until a host insect or plant encounter these conidia. The “creeper” phenotype is predominantly a mycelial phenotype. In this strategy, hyphae move through the soil until a host insect or plant is encountered. We theoretically model the costs and benefits of these phenotypic polymorphisms and suggest how evolution could possibly select for these different strategies.
6
Wang, Frederick M. "Jeepers Creepers, Where'd You Get Those Peepers?" Journal of Pediatric Ophthalmology & Strabismus 53, no. 6 (November 1, 2016): 331–32. http://dx.doi.org/10.3928/01913913-20161017-01.
Full text
7
Watson, Lindsay. "Catullus and the Brothel-Creepers: Carmen 37." Antichthon 43 (2009): 123–36. http://dx.doi.org/10.1017/s0066477400001994.
Full textAbstract:
Salax taberna vosque contubernales,a pilleatis nona fratribus pila,solis putatis esse mentulas vobis,solis licere, quidquid est puellarum,confutuere et putare ceteros hircos? 5an, continenter quod sedetis insulsicentum an ducenti, non putatis ausurumme una ducentos irrumare sessores?atqui putate: namque totius vobisfrontem tabernae sopionibus scribam. 10puella nam mi, quae meo sinu fugit,amata tantum quantum amabitur nulla,pro qua mihi sunt magna bella pugnata,consedit istic. hanc boni beatiqueomnes amatis, et quidem, quod indignum est, 15omnes pusilli et semitarii moechi;tu praeter omnes une de capillatis,cuniculosae Celtiberiae fili,Egnati, opaca quem bonum facit barbaet dens Hibera defricatus urina. 20Randy tavern and you tavern-men, nine pillars from the cap-clad brothers, do you think that you alone have pricks, that you alone are permitted comprehensively to fuck whatever girls there are and to consider the rest of us goats? Do you really think that, because you sit there, silly fools, one hundred or maybe two hundred in a row, I won't dare to mouth-fuck you as you sit there, all of you at once? Well, you had better believe it. For I will inscribe the front of the whole tavern for you with obscene graffiti. For my girl, who has fled from my embrace, beloved by me as no other woman will be loved, for whom great wars have been fought by me, has taken her seat there with you. Her all you great and rich men love, and – what is shameful – all of you cheap back-street lechers: you above all, you outstanding member of the long-haired crew, son of bunny-infested Celtiberia, Egnatius, to whom a thick beard and his teeth brushed in Spanish urine give respectability.
8
Suneetha, J., J. Rao, P. Rao, and T. V. V. Reddi. "Ethnomedicine for Diabetes in East Godavari District of Andhra Pradesh." Journal of Non Timber Forest Products 22, no. 1 (March 1, 2015): 39–41. http://dx.doi.org/10.54207/bsmps2000-2015-qo399r.
Full textAbstract:
The present paper deals with ethnomedicine for diabetes from East Godavari district. The study yielded 21 plant species covering as many genera and 16 families. Trees are dominant followed by creepers, herbs, tubers and a shrub. Seven new plant species are reported for curing diabetes.
9
Pratt, H. Douglas. "Systematics of the Hawaiian "Creepers" Oreomystis and Paroreomyza." Condor 94, no. 4 (November 1992): 836–46. http://dx.doi.org/10.2307/1369281.
Full text
10
Subramanian, Kumaran. "Plant Creepers in the Ancient Tamil Love Poetry." Journal of Indian Studies 6, no. 1 (July 1, 1996): 35–46. http://dx.doi.org/10.22452/jis.vol6no1.3.
Full text
11
Haiying, Li. "Creepers Vertical Greening Strategies on High-rise Building." IOP Conference Series: Earth and Environmental Science 401 (November 28, 2019): 012020. http://dx.doi.org/10.1088/1755-1315/401/1/012020.
Full text
12
Kattmann, Ulrich. "Aquatics, Flyers, Creepers and Terrestrials — students' conceptions of animal classification." Journal of Biological Education 35, no. 3 (June 2001): 141–47. http://dx.doi.org/10.1080/00219266.2001.9655763.
Full text
13
Laskar, Abhrajit, Oleg E. Shklyaev, and Anna C. Balazs. "Designing self-propelled, chemically active sheets: Wrappers, flappers, and creepers." Science Advances 4, no. 12 (December 2018): eaav1745. http://dx.doi.org/10.1126/sciadv.aav1745.
Full textAbstract:
Catalyst-coated, hard particles can spontaneously generate fluid flows, which, in turn, propel the particles through the fluid. If the catalyst-coated object were a deformable sheet, then the self-generated flows could affect not only the sheet’s motion but also its shape. By developing models that capture the interrelated chemical, hydrodynamic, and mechanical interactions, we uncover novel behavior emerging from the previously unstudied coupling between active, soft sheets and the surrounding fluid. The chemically generated flows “sculpt” the sheet into various forms that yield different functionalities, which can be tailored by modifying the sheet’s geometry, patterning the sheet’s surface with different catalysts, and using cascades of chemical reactions. These studies reveal how to achieve both spatial and temporal controls over the position and shape of active sheets and thus use the layers to autonomously and controllably trap soft objects, perform logic operations, and execute multistage processes in fluid-filled microchambers.
14
BAPTISTA, LUIS F., and ROBIN KREBS. "Vocalizations and relationships of Brown Creepers Certhia americana: a taxonomic mystery." Ibis 142, no. 3 (June 28, 2008): 457–65. http://dx.doi.org/10.1111/j.1474-919x.2000.tb04442.x.
Full text
15
Yuliyanto and Zulfitriyanto. "Analysis of pepper plant creepers technology using banana tree fiber composites." Journal of Physics: Conference Series 1450 (February 2020): 012110. http://dx.doi.org/10.1088/1742-6596/1450/1/012110.
Full text
16
McGrath, Melanie J., Kathryn Randall-Dzerdz, Melissa A. Wheeler, Sean Murphy, and Nick Haslam. "Concept creepers: Individual differences in harm-related concepts and their correlates." Personality and Individual Differences 147 (September 2019): 79–84. http://dx.doi.org/10.1016/j.paid.2019.04.015.
Full text
17
Ramlall, Indranarain. "Gauging the impact of climate change on food crops production in Mauritius." International Journal of Climate Change Strategies and Management 6, no. 3 (August 12, 2014): 332–55. http://dx.doi.org/10.1108/ijccsm-12-2012-0079.
Full textAbstract:
Purpose – The purpose of this paper is to delve into an extensive analysis of different food crops, ranging from bananas, beans, brinjals, cabbages, chillies, creepers, groundnuts, mixed vegetables, pineapples and tomatoes, over three decades. To maintain an ever-increasing population level, much stress is exerted on the production of food crops. However, till date, very little is known about how climate change is influencing the production of food crops in Mauritius, an upper-income developing country found in the Indian Ocean and highly vulnerable to climate risks. Design/methodology/approach – Based on the interactions between production of crops, harvest area for crops and weather metrics, a vector autoregressive model (VAR) system is applied comprising production of each crop with their respective harvest area. Weather metrics are then entered into as exogeneous components of the model. The underlying rationale is that weather metrics are not caused by production or harvest area and should thereby be exogeneously treated. Should there be cointegration between the endogenous components, the vector error correction model (VECM) will be used. Diagnostic tests will also be entertained in terms of ensuring the endogeneity states of the presumed variables under investigation. The impact of harvest area on product is plain, as higher the harvest area, the higher is the production. However, a bi-directional causality can also manifest in the case that higher production leads towards lower harvest area in the next period as land is being made to rest to restore its nutrients to enable stable land productivity over time. Other dynamics could also be present. In case cointegration prevails, VECM will be used as the econometric model. The VAR/VECM approach is applied by virtue of the fact that traditional ordinary least squares (OLS) estimation approach will be biased and susceptible to trigger off unreliable results. Recourse is made towards the Johansen and Juselius (1990) technique. The Johansen and Juselius approach is based on the following VAR specification-bivariate VAR methodology. X1,t = A0 + A1,1X1,t – 1 + A1,2X1,t – 2+ […] .+ A1,p X1,t – p + A2,1X2,t – 1 + A2,2X2,t – 2+ […] .+ A2,pX2,t – p + ßjW + e1,t […] […]..(1) X2,t = B0 + B2,1X2,t – 1 + B2,2X2,t – 2+ […] .+ B2,p X2,t – p + B1,1X1,t – 1 + B1,2X2,t – 2+ […] .+ B1,pX2,t – p + ajW + e2,t […] […] […](2) X1,t is defined as the food crops production, while X2,t pertains to harvest area under cultivation for a given crop under consideration, both constituting the endogeneous components of the VAR. The exogeneous component is captured by W which consists of the nine aforementioned weather metrics, including the cyclone dummy. The subscript j under equation (1) and (2) captures these nine distinct weather metrics. In essence, the aim of this paper is to develop an econometric-based approach to sieve out the impacts of climate metrics on food crops production in Mauritius over three decades. Findings – Results show weather metrics do influence the production of crops in Mauritius, with cyclone being particularly harmful for tomatoes, chillies and creepers. Temperature is found to trail behind bearish impacts on tomatoes and cabbages production, but positive impacts in case of bananas, brinjals and pineapples productions, whereas humidity enhances production of beans, creepers and groundnuts. Evidence is found in favour of production being mainly governed by harvest area. Overall, the study points out the need of weather derivatives in view of hedging against crop damages, let alone initiation of adaptation strategies to undermine the adverse effects of climate change. Originality/value – To the best of the author’s knowledge, no study has been undertaken in Mauritius, let alone developing of an econometric model that properly integrates production, harvest area and weather metrics. Results show weather metrics do influence the production of crops in Mauritius, with cyclone being particularly harmful for tomatoes, chillies and creepers. Temperature is found to trail behind bearish impacts on tomatoes and cabbages production, but positive impacts in case of bananas, brinjals and pineapples productions, whereas humidity enhances production of beans, creepers and groundnuts. Evidence is found in favour of production being mainly governed by harvest area. Overall, the study points out the need of weather derivatives in view of hedging against crop damages, let alone initiation of adaptation strategies to undermine the adverse effects of climate change.
18
Brand, L. Arriana, and T. Luke George. "Response of Passerine Birds to Forest Edge in Coast Redwood Forest Fragments." Auk 118, no. 3 (July 1, 2001): 678–86. http://dx.doi.org/10.1093/auk/118.3.678.
Full textAbstract:
Abstract The response of passerine birds to forest edge was examined in old-growth and mature second-growth coast redwood (Sequoia sempivirens) forest in northern California. The study objectives were to determine which common passerine species are sensitive to edges during the breeding season and to estimate edge width for forest interior species. Response to edge was measured along twelve 100 × 400 m plots extending from the edge into the forest interior to obtain relative density of birds. Plots were surveyed 4 to 5 times in 1996 and 8 to10 times in 1997. We found that 14 common passerines showed a gradient of edge sensitivity. Steller's Jay (Cyanocitta stelleri) and Swainson's Thrush (Catharus ustulatus) had higher relative densities near edges than in the forest interior (P < 0.05) and were categorized as edge species. Brown Creeper (Certhia americana), Winter Wren (Troglodytes troglodytes), Pacific-slope Flycatcher (Empidonax difficilis), and Varied Thrush (Ixoreus naevius) had lower relative densities near edges (P < 0.05) and were categorized as interior birds. Based on exponential regression models, estimated edge widths were 140 m for Varied Thrushes, 85 m for Brown Creepers, 120 m for Winter Wrens, and 125 m for Pacific-slope Flycatchers. Creation of edges would probably benefit Steller's Jays (which may be a nest predator), may not benefit Swainson's Thrushes, and may be detrimental to species that avoid edges. We recommend that edge effects be taken into consideration when planning for the conservation of bird species in the region.
19
Olson, Cory R., Kevin C. Hannah, and Christine Gray. "First Confirmed Record of Breeding Brown Creepers in the Northwest Territories, Canada." Northwestern Naturalist 90, no. 2 (September 2009): 156–59. http://dx.doi.org/10.1898/nwn08-36.1.
Full text
20
Xue-Tao, Yuan, Li Fu-Ping, and Gu Hai-Hong. "Effects of high temperature on photosynthetic capacity in the leaves of creepers." ScienceAsia 46, no. 4 (2020): 436. http://dx.doi.org/10.2306/scienceasia1513-1874.2020.060.
Full text
21
Sivashanmugarajah, S. "இலங்கை முல்லைத்தீவு மாவட்டத்திலுள்ள மூலிகை இடப்பெயர்கள்." Shanlax International Journal of Tamil Research 5, no. 3 (January 1, 2021): 80–98. http://dx.doi.org/10.34293/tamil.v5i3.3645.
Full textAbstract:
There are many ways to find out the location and diversity of medicinal herbs for documentation. The detail study of herbal place names is one of them. This study was carried out to identify and documentation of herb based place names of Mullaitivu District in the Northern Province of Sri Lanka. The data was collected from field study, interviews, Government publications, books and authentic journals. Among the 632 villages of this district, 183 villages (30%) were related to herbs names. The types of herbs relevant to the place names were 64% trees, 16% shrubs, 10% grasses, 8% creepers and 2% aquatic plants. Details are described in this article.
22
Adams, Elizabeth M., and Michael L. Morrison. "Effects of Forest Stand Structure and Composition on Red-Breasted Nuthatches and Brown Creepers." Journal of Wildlife Management 57, no. 3 (July 1993): 616. http://dx.doi.org/10.2307/3809292.
Full text
23
Kittle, B. Alex, and Roger W. Portell. "Extinct Giant Mud Creepers (Mollusca: Gastropoda) from the Oligocene of the Southeastern United States." Paleontological Society Special Publications 13 (2014): 32. http://dx.doi.org/10.1017/s2475262200010649.
Full text
24
Lastaria, Lastaria, Muhammad Tri Ramdhani, and Indah Tri Handayani. "Makna Dan Fungsi Simbol Biologika menurut Budaya Masyarakat Dayak Ngaju di Museum Balanga Palangka Raya." Anterior Jurnal 18, no. 1 (December 11, 2018): 64–70. http://dx.doi.org/10.33084/anterior.v18i1.404.
Full textAbstract:
Symbols are part of a complex means of communication that has various meanings. Symbols are not only in the form of verbs but symbols are also nonverbal as those found in customary practices are realized in the form of equipment/ objects/goods. This study aims to describe the meaning and function of the symbol of the cultural biology of the Ngaju Dayak community in the Balanga Museum Palangka Raya. The method used in this study is descriptive with a qualitative approach. The techniques used are recording, interviews, observation, and documentation. Based on the results of the study there are eight biological objects that contain cultural symbols for the Dayak Ngaju community, namely: dawen sawang (sawang leaves, uwei (rattan), humbang (bamboo), tampung papas (sacred leaves/purification), suli (galangal stems), creepers (clothes baskets), hadangan (buffalo), and maharanda.
25
Ira, Karthikeyan. "Medicinal Plants Mentioned in Tamil Sangam Anthologies." International Research Journal of Tamil 3, no. 1 (January 28, 2021): 230–39. http://dx.doi.org/10.34256/irjt21125.
Full textAbstract:
When Tamil Literary Epochal Anthologies were made, in them were identified very many herbal diversities. In Sangam times, people lived well aligned with Nature World, of which they knew they too were a part. Flora and Vegetation were part of their living. Plants were integral to the lifestyle of theirs they knew. Creepers, Climbers, and Herbs were medicinal to them in their life. But in centuries that followed, their minds gradually veered away from the focus of the significant vegetable kingdom. Nowadays, when viruses attack humanity, we by compulsion look back to olden times and are disposed to think of the medicinal uses of forgotten or neglected plant and herbal species which might offer protection from endemics and pandemics like SARS Covid varieties. This article explores the importance of such plant species in their culture, cultivation, growth, extraction and medicinal utility in pharmacological applications.
26
Manthey, J. D., J. Klicka, and G. M. Spellman. "Chromosomal patterns of diversity and differentiation in creepers: a next-gen phylogeographic investigation of Certhia americana." Heredity 115, no. 2 (April 8, 2015): 165–72. http://dx.doi.org/10.1038/hdy.2015.27.
Full text
27
Butler, Leah, Holly Ningard, Brandie Pugh, and Thomas Vander Ven. "Creepers, Druggers, and Predator Ambiguity: The Interactional Construction of Campus Victimization and the University Sex Predator." American Journal of Criminal Justice 42, no. 4 (January 6, 2017): 790–806. http://dx.doi.org/10.1007/s12103-016-9383-1.
Full text
28
Boddupalli, Raghava S. "Lexical Botany in Amarakośa." Journal of South Asian Studies 8, no. 1 (April 17, 2021): 31–37. http://dx.doi.org/10.33687/jsas.008.01.3388.
Full textAbstract:
Sanskrit literature abounds in lexicons. Amarakośa is the most celebrated and authoritative ancient thesaurus of Sanskrit. There are references to various lexicons in many ancient Sanskrit texts, but none of these except for Dhanvantari’s and Amarasiṃha’s are extant. Between the two, the latter’s work Nāmaliṇgānuśāsana popularly known as Amarakośa is very familiar to every student of Sanskrit. The actual name of the book ‘Nāmaliṇgānuśāsana’ means instruction concerning nouns and gender. It is divided into three kāṇḍas (volumes). Eachkāṇḍa is divided into Vargas depending on the subject they deal with. A list of more than 220 plants is mentioned with all the synonyms in the four Vargas. The plants that are revealed in the Amarakośacan be classified into huge trees, edible fruit trees, shrubs, herbs, creepers, water plants, grasses, pulses, cereals, wild cereals and others. Plants that are generally used for incensing, perfumery and cosmetics for human consumption are mentioned in the Manuṣhya Varga. In the Vaiśyavarga crops of commercial value are included.
29
Lucena, Reinaldo Farias Paiva de, Patrícia Muniz de Medeiros, Elcida de Lima Araújo, Ângelo G. Chaves Alves, Kallyne Machado Bonifácio, José da Silva Mourão, and Ulysses Paulino de Albuquerque. "Utilitarian and cognitive aspects in the ethnotaxonomy of plants from the Caatinga in two rural communities in Northeastern Brazil." Revista Brasileira de Gestão Ambiental e Sustentabilidade 8, no. 20 (2021): 1459–88. http://dx.doi.org/10.21438/rbgas(2021)082013.
Full textAbstract:
This research sought to contribute to plant ethnotaxonomic studies and aimed to describe cognitive and utilitarian aspects used in communities in the semi-arid region of Brazil. The question asked in the interview was: "What plants do you know?" The interviews were conducted with local specialists, using plant names written on cards randomly placed on a table. The informants were asked to organize the cards according to their understanding. Two hundred and one folk generics were recorded in Cachoeira and 185 in Barrocas, both communities located in the Municipality of Soledade (Paraíba). These generics were divided into 65 trees/shrubs, 138 herbs, 10 lianas/creepers, 7 cacti, and 4 bromeliads. A total of 146 monotypic and 24 polytypic folk generic were identified. The life forms were abundant; some of them had already been recorded in the literature but others were recorded for the first time. The morphological and utilitarian aspects were the most used classification criteria. The informants followed no consensus model to organize their classification.
30
Alter, HJ. "G-pers creepers, where'd you get those papers? A reassessment of the literature on the hepatitis G virus." Transfusion 37, no. 6 (June 1997): 569–72. http://dx.doi.org/10.1046/j.1537-2995.1997.37697335149.x.
Full text
31
Dutta, Deba Kumar, Pranab Jyoti Bora, Rita Mahanta, Amit Sharma, and Anindya Swargowari. "Seasonal variations in food plant preferences of reintroduced Rhinos Rhinoceros unicornis (Mammalia: Perrissodactyla: Rhinocerotidae) in Manas National Park, Assam, India." Journal of Threatened Taxa 8, no. 13 (November 26, 2016): 9525. http://dx.doi.org/10.11609/jott.2486.8.13.9525-9536.
Full textAbstract:
The food preferences of translocated Rhinos in Manas National Park were studied to find out variations in seasonal and annual preferences. A total of 139 plants species belonging to 39 families were observed to be consumed as food. On an average, grasses (n=33) contributed 24% of Rhino food, aquatic plants (n=23) 16.5%, shrubs (n=11) 7.5%, herbs (n = 31) 22.3% trees (n=26) 18.7%, creepers (n=3) 2.1% and agricultural crops (n=12) 8.6%. Among the grasses, throughout the year Arundo donax, Cynodon dactylon, Imperata cylindrica, Saccharum elephantinus and Saccharum spontaneum were the maximum preferred species. Rhinos were observed to browse shrubs and tree twigs during the winter season and browsing was found to be very limited during the monsoon due to the abundance of young grass. Various anthropogenic pressures such as unregulated grassland burning, cattle grazing, invasions of Bombax ceiba and shrubs like Chromolaena odorata, Leea asiatica and herbs like Ageratum conyzoides have degraded some of the important grasslands. So, a proper grassland management protocol including the burning of grasslands during the dry season, keeping grazing animals away and control of weeds is suggested in the areas extensively used by the Rhinos.
32
Thompson, Ian D., Philip Wiebe, and David A. Kirk. "Resident and cavity-nesting avian community is affected by amount but not age of white pine in central Ontario mature mixedwood forests." Canadian Journal of Forest Research 46, no. 5 (May 2016): 725–37. http://dx.doi.org/10.1139/cjfr-2015-0477.
Full textAbstract:
Forests with old-growth white pines have been severely reduced compared with historical levels. We examined resident and cavity-nesting bird species abundances in winter and the breeding season, because some of these species may prefer old-forest habitats for breeding. We counted birds over 10 years in four mixedwood types: old pine, mature pine, mature nonpine, and selection-harvested stands. We expected that old pine stands would be selected by some species because of abundant snags and large trees for foraging. We assessed habitat use among years and changes following harvesting. Counts of nomadic species varied across years but counts for others did not. Species used old and mature pine mixedwoods equally and more than nonpine or harvested stands in winter and for breeding, but old stands were not preferred. Important variables included percent pine and large tree density. Selection harvesting benefitted Yellow-bellied Sapsuckers but reduced counts of Black-capped Chickadees and Brown Creepers. Black-capped Chickadees changed habitats between seasons and in some years. Black-backed Woodpeckers were most common in pine stands but abundant in harvested stands for 2 years following cutting. Regardless of stand age, large (>40 cm) pines provide important habitat for residents and cavity nesters.
33
Heine, Steven. "Just Sitting and Just Saying: The Hermeneutics of Dōgen’s Realization-Based View of Language." Religions 12, no. 2 (January 28, 2021): 81. http://dx.doi.org/10.3390/rel12020081.
Full textAbstract:
This paper explicates the complex relationship between contemplative practice and enlightened activity conducted both on and off the meditative cushion as demonstrated in the approach of the Sōtō Zen Buddhist founder Dōgen (1200–1253). I examine Dōgen’s intricate views regarding how language, or what I refer to as just saying, can and should be used in creative yet often puzzling and perplexing ways to express the experience of self-realization by reflecting the state of non-thinking that is attained through unremitting seated meditation or just sitting (shikan taza). In light of the sometimes-forbidding obscurity of his writing, as well as his occasional admonitions against a preoccupation with literary pursuits, I show based on a close reading of primary sources that Dōgen’s basic hermeneutic standpoint seeks to overcome conventional sets of binary oppositions involving uses of language. These polarities typically separate the respective roles of teacher and learner by distinguishing sharply between delusion and insight, truth and untruth, right and wrong, or speech and silence, and thereby reinforce a hierarchical, instrumental, and finite view of discourse. Instead, Dōgen inventively develops expressions that emphasize the non-hierarchical, realization–based, and eminently flexible functions of self-extricating rhetoric such that, according to his paradoxical teaching, “entangled vines are disentangled by using nothing other than entwined creepers,” or as a deceptively straightforward example, “the eyes are horizontal, and the nose is vertical.”
34
Pudelska, Krystyna, and Anna Mirosław. "The richness of plants in Art Nouveau gardens." Acta Agrobotanica 32, no. 2 (2015): 99–108. http://dx.doi.org/10.5586/aa.2014.055.
Full textAbstract:
<p>The turn of the 19th and the 20th centuries signified the appearance of a new trend in art called Art Nouveau in England, <em>Stile floreale</em> in Italy, and in Poland – <em>secesja</em>. It was an attempt to escape from the style that copied historical forms and set a new direction of development. The main inspiration for the creators of this period became nature, its asymmetry, variety of textures, subtle colors or smooth, and wavy lines. Artistic motifs were drawn from the richness of native flora and fauna. Flowering shrubs, perennials and creepers were especially inseparable decorative and compositional elements of a garden. </p><p>Secession had a significant impact on painting, sculpture, architecture, and garden design. The space surrounding people was treated comprehensively by blurring the boundaries between different arts. A multitude of shrubs – especially roses and lots of perennials such as <em>Lilium</em>, <em>Iris</em>, and <em>Phlox</em>, gave the impression of architecture immersing in the surrounding garden.</p><p>The aim of the paper was to briefly analyze the Art Nouveau style and present the diversity of species used in the gardens of that period.</p>
35
Borisova, Anastasia. "The Many-Faced Monster Abaasy: Transformationof Epic Images Revisited." Бюллетень Калмыцкого научного центра Российской академии наук 2, no. 22 (October 17, 2022): 162–76. http://dx.doi.org/10.22162/2587-6503-2022-2-22-162-176.
Full textAbstract:
Introduction. The article examines motifs of transformations experienced by abaasy epic monsters in Yakut folklore. Materials. The study focuses on earliest Olonkho records published at the end of the 19th century. Goals. The paper aims at revealing types of transformations inherent to the epic monster abaasy, classifying the former, and determining functional features of such motifs. Results. The insight into available materials reveals a number of forms (objects) abaasy epic monsters tend to turn into, namely: 1) natural phenomena (scorching heat and a rock-bedded river, whirlwind); 2) birds (raven, three-headed mythical eagle); 3) animals (wolf, bull, mythical black beast, huge mythical dragon-like serpent); 4) fish (perch, pike); 5) insects and creepers (amphibians, reptiles); 6) resurrection of the dead; 7) aiyy maiden. The work concludes each transformation pattern is characterized by specific functional peculiarities and is implemented by the abaasy for certain goals, e.g. to lure a victim, escape a danger, or gain a rebirth. The identification of main characters with natural forces, presence of ornithomorphic, zoomorphic, ichthyomorphic and other forms in transformations show that different cultural and religious views of the people can be traced in the Olonkho Epic. Further studies of the topic with insights into later Olonkho records can serve additional materials for determining the periods of mythological development of the Olonkho Epic.
36
Greenway, M. "Suitability of macrophytes for nutrient removal from surface flow constructed wetlands receiving secondary treated sewage effluent in Queensland, Australia." Water Science and Technology 48, no. 2 (July 1, 2003): 121–28. http://dx.doi.org/10.2166/wst.2003.0101.
Full textAbstract:
From a botanical perspective the major difference between waste stabilisation ponds and wetlands is the dominance of algae or floating plants in the former and emergent plants in the latter. Algae, floating and submerged plants remove nutrients directly from the water column whereas emergent species remove nutrients from the sediment. Water depth is a crucial factor in determining which plant types will become established. Surface flow constructed wetlands offer the greatest potential to grow a wide variety of different types of macrophytes. In assessing the suitability of plant species for nutrient removal, consideration must be given not only to nutrient uptake for growth but also storage of nutrients as plant biomass. A survey of macrophytes in 15 surface flow constructed wetlands treating secondary effluent was conducted in Queensland; 63 native species and 14 introduced species were found. Emergent species have been able to tolerate deeper water than in their natural environment and permanent waterlogging. All species grew well in the higher nutrient enriched wastewater. Submerged, floating leaved-attached and free floating species had the highest tissue nutrient content, followed by aquatic creepers. All these species remove nutrients from the water column. Emergent species had lower nutrient content but a greater biomass and were therefore able to store more nutrients per unit area of wetland. In order to maximise the efficiency of constructed wetlands for nutrient removal, a range of species should be used. Native species should be selected in preference to introduced/exotic species.
37
Aggangan, Nelly, Nelson Pampolina, Nina Cadiz, and Asuncion Raymundo. "Assessment of Plant Diversity and Associated Mycorrhizal Fungi in the Mined-out Sites of Atlas Mines in Toledo City, Cebu for Bioremediation." Journal of Environmental Science and Management 18, no. 1 (June 30, 2015): 71–86. http://dx.doi.org/10.47125/jesam/2015_1/08.
Full textAbstract:
The diversity of plant and mycorrhizal fungi within the 35,000-ha of the Atlas Mines in Toledo, Cebu, was surveyed with the goal of rehabilitating their mined-out area through bioremediation (the use of dominant plants and mycorrhizal fungi present in area to contain/reduce pollutants). From five one km transect lines in five sites, the survey indicated that the vegetation was classified as a disturbed grass-shrubland-savanna-agroforest plant community with tree plantations in rehabilitated sites. Plant composition comprised 69 species belonging to 66 genera and 35 families which include trees, shrubs, herbs, creepers, vines, agricultural or agroforest crops. Fruit bodies of ectomycorrhizal fungi (ECMF), namely: Pisolithus, Scleroderma, Thelephora and Boletellus were found under Acacia auriculiformis, A. mangium, Eucalyptus urophylla and E. camaldulensis. Pisolithus were the most dominant. For arbuscular mycorrhizal fungi (AMF), out of 50 plants collected, 10-100% roots of Lycopodium, Saccharum spontaneum, Nephrolepsis, Acacia mangium and Stachytarpheta jamaicensis were colonized by AMF. All roots of S. jamaicensis were colonized solely by Glomus sp. Pithecellobium dulce harboured the highest spore density (2,575 spores/plant/30g dry soil), consisting of Glomus (42%), Acaulospora (24%) and Entrophospora (37%). Muntingia calabura was the only plant associated with Glomus, Gigaspora, Scutellospora, Acaulospora and Entrophospora, though with low spore population. Glomus was the most prevalent among the AMF. The above AMF and ECMF can be mass-produced as biofertilizers for use in bioremediation of mined-out sites and other areas with similar conditions.
38
Perrott, Bruce. "Retailing Tropical Plants in Queensland: A Family History." Queensland Review 10, no. 2 (November 2003): 59–63. http://dx.doi.org/10.1017/s1321816600003317.
Full textAbstract:
I am connected to a family nursery business that has been running for four generations. My links go back to the early 1890s when my great grandfather had a nursery at Upper Mt Gravatt. He then shifted to South Brisbane where he moved into floristry. The business, however, was destroyed in the flood of 1893. His daughter, my grandmother, married Tom Perrott who had started in a nursery business with a well known nurseryman in Brisbane called T. H. Woods. They established the shop in George Street. They were also in the florist business and, in 1919, they decided to buy a nursery at Herston, near Ballymore Park and the Royal Brisbane Hospital, which ran until 1963. In the meantime, they had bought another nursery at Enoggera in 1936 (which I now own), and ran the two nurseries simultaneously. At that time, the main part of the business was still floristry and they did quite well in the depression years. The nursery at Enoggera was a 20 acre dairy farm that had been purchased mainly for the purpose of growing flowers for the floral trade. We used to grow rows and rows of different annuals and creepers and anything we could plant to flower, including many camellias which are still there today. A team of women would arrive at 6 o'clock every morning to pick these flowers and prepare them for packaging and transporting to the floral room at Herston.
39
Bewtra, Poonam. "Regenerative Food Forest: A Case Study of Vanya Organic Farm." Current Agriculture Research Journal 10, no. 3 (January 5, 2023): 207–15. http://dx.doi.org/10.12944/carj.10.3.05.
Full textAbstract:
Food Forests involve planned agro-forestry. A food forest like a real forest needs no pesticides, herbicides, weeding, crop rotation, mowing or digging. It will ensure the sustainability of flora and fauna, birds, animals and most importantly bees. This is a case study of one such food forest, Vanya Organic which is a dream turned into reality by one of its owners, Mr. Patanjali Jha. He grew native trees, creepers and shrubs in combination with symbiotic vegetation to ensure maximum carbon sequestration, provide forest cover and usable by-products A very important part of his food forest is the inclusion of Vetiver Grass. Mr. Jha suggests that Food Forests and Vetiver Plantations should be looked at together and set up together and called a Regenerative Food Forest. Compressed Bio Gas (CBG) or Renewable Natural Gas (RNG), a Green Fuel, is derived from agriculture waste or other forms of organic waste called biomass which is produced in abundance by the regenerative food forests. A CBG plant produces Sulphur stripped Methane of automotive grade and also produces a very high-quality organic fertilizer as a by-product which has been approved for regular use by the Ministry of Agriculture. Therefore, there is a need to link these CBG Plants with regenerative food forests. It will provide jobs, increase farm incomes, and over a period of time, this will induce positive sustainable changes in air, water and soil quality. The case study has been prepared with his consent and approval.
40
Beani, Laura, Federico Cappa, Fabio Manfredini, and Marco Zaccaroni. "Preference of Polistes dominula wasps for trumpet creepers when infected by Xenos vesparum: A novel example of co-evolved traits between host and parasite." PLOS ONE 13, no. 10 (October 24, 2018): e0205201. http://dx.doi.org/10.1371/journal.pone.0205201.
Full text
41
Chaudhary, Sujan, Gyanu Thapa Magar, Shiv Nandan Sah, and Sanju Parajuli. "Ethnic Plants of Tharu Community of Eastern Nepal." International Journal of Applied Sciences and Biotechnology 8, no. 2 (June 25, 2020): 223–30. http://dx.doi.org/10.3126/ijasbt.v8i2.28325.
Full textAbstract:
Ethnobotany is the study of ethnic plants of particular people living in particular place. It accommodates list, details and description of all those studied plants regarding with their various uses. Tharu people belong to one of the indigenous communities especially in Terai region of Nepal. Tharu people have been using these plant resources since 18th century. This study aims to identify ethnic plants of Tharu community of eastern Nepal and their uses in their daily lives. Enumeration of useful plants from Tharu ethnic community was conducted in four villages of Ramdhuni municipality of Sunsari district. Participatory Rural Appraisal (PRA) and household sampling technique were used for data collection. Plant specimens were collected and information regarding it was obtained from local Dhamis, Jhankris, farmers and old age people. This study reported thirty-seven useful plant species under 25 families. In total 37 species, 25 were recorded as medicinal plant, used to treat pneumonia, menstrual disorder, stones, piles, skin disease etc. Other plant species were used for food, fodder, timber, fiber and ceremonial/ religious activities. Most plant species (78.3%) were having multiple use value, and kept under more than one use category and few species (21.7%) with single use category. Trees (27.02%) and herbs (27.02%), both were dominant over grass, shrubs, climbers and creepers. This study has revealed that many plants species are being used by Tharu community of Eastern Nepal as their ethnic plants for medicine, food, fodder, ornament, material etc which needs to be more explored.
Int. J. Appl. Sci. Biotechnol. Vol 8(2): 223-230
42
Gaertner, Mirijam, Alana Den Breeyen, Cang Hui, and David M. Richardson. "Impacts of alien plant invasions on species richness in Mediterranean-type ecosystems: a meta-analysis." Progress in Physical Geography: Earth and Environment 33, no. 3 (June 2009): 319–38. http://dx.doi.org/10.1177/0309133309341607.
Full textAbstract:
Besides a general consensus regarding the negative impact of invasive alien species in the literature, only recently has the decline of native species attributable to biological invasions begun to be quantified in many parts of the world. The cause-effect relationship between the establishment and proliferation of alien species and the extinction of native species is, however, seldom demonstrated. We conducted a meta-analysis of studies in Mediterranean-type ecosystems (MTEs) to examine: (1) whether invasion of alien plant species indeed causes a reduction in the number of native plant species at different spatial and temporal scales; (2) which growth forms, habitat types and areas are most affected by invasions; and (3) which taxa are most responsible for native species richness declines. Our results confirm a significant decline in native species richness attributable to alien invasions. Studies conducted at small scales or sampled over long periods reveal stronger impacts of alien invasion than those at large spatial scales and over short periods. Alien species from regions with similar climates have much stronger impacts, with the native species richness in South Africa and Australia declining significantly more post-invasion than for European sites. Australian Acacia species in South Africa accounted for the most significant declines in native species richness. Among the different growth forms of alien plants, annual herbs, trees and creepers had the greatest impact, whereas graminoids generally caused insignificant changes to the native community. Native species richness of shrublands, old fields and dune vegetation showed significant declines, in contrast to insignificant declines for forest habitats.
43
Nedashkivskyi, V. M., and B. D. Mishchenko. "Injection of pidgovlі bjolin family with glucose-fructose syrup on the effectiveness of growing bjolin uterus." Scientific Messenger of LNU of Veterinary Medicine and Biotechnologies 23, no. 94 (April 7, 2021): 46–49. http://dx.doi.org/10.32718/nvlvet-a9409.
Full textAbstract:
On the development and productivity of bjolin queens, they infuse the methods of vivennya, dew vivification, weather conditions, and the appearance of food - bee bread and honey, or a square file and nectar. On a practical basis, the preparation of the large family of creepers with food, additional supplies of small private substitutes, one of such substitutes is glucose-fructose syrup. The purpose of this work was to study the effect of carbohydrate supplementation with glucose-fructose syrup in foster families on the number and weight of reared queens in the context of supportive honey. In the statistic, it has been infused into the adolescent bjolin family with glucose-fructose syrup on the efficiency of the growth of bjolin queen bees. The pre-session was carried out at the base of the PP “Volodymyr” with. Shershny Tivrivsky district of the Vinnytsia region. In the past year, in the year of the bdzholin family, glucose-fructose syrup was revealed, which shortens the result of the reception of larvae per vykhovannya to preserve in the previous groups by 12.5 % more portions of the control group in bjolins. The water hour revealed a decrease in vibrating mothers by 10.5 %, depending on the control group, in which case the indicator of the increase in changes was made. In the results of the last few days, it was established that the introduction of glucose-fructose syrup to the last group of glucose-fructose syrup to the last group was increased, and the increase in the intensity of the growth of the bjolin queens became freely average, to a maximum of 20.3 % for the group. Thus, the obtained data indicate the effectiveness of the effect of glucose-fructose syrup during feeding in foster families on the number and weight of reared queens.
44
Roppa, Cristiane, Ricardo Valcarcel, and Hiram Feijó Baylão Junior. "AVALIAÇÃO DA REGENERAÇÃO EM ECOSSISTEMAS PERTURBADOS COMO INDICADOR DA RESTAURAÇÃO EM AMBIENTES COM MARCADA ESTACIONALIDADE, NOVA IGUAÇU (RJ)." FLORESTA 42, no. 2 (May 14, 2012): 257. http://dx.doi.org/10.5380/rf.v42i2.22616.
Full textAbstract:
A variação da composição florística e estrutural da regeneração natural (0,10 < altura < 3,0 m; CAP ≤ 15 cm) foi avaliada em áreas perturbadas de fragmento florestal secundário em estágio médio e pastagem, em ambiente Estacional Semidecidual de Nova Iguaçu (RJ). O levantamento florístico foi realizado durante período chuvoso (145 mm) e de estiagem (15 mm) no ano 2008, utilizando-se método fitossociológico de pontos. Os resultados evidenciaram a saída de 8 espécies (37,50% de trepadeiras e 37,50% de arbustivas decíduas) na floresta e 7 espécies (71,43% de herbáceas) na pastagem. A diversidade e o tipo de hábito das espécies regenerantes na floresta sinalizam a adaptação das espécies permanentes ao sistema ecológico com marcado período de estiagem, em que os efeitos climáticos afetam rapidamente as dinâmicas populacionais dos ecossistemas em fase de restauração.Palavras-chave: Sazonalidade; sucessão vegetal; restauração florestal. AbstractEvaluation of regeneration in disturbed ecosystems as indicator of restoration in environments with marked seasonality, Nova Iguaçu (RJ). The variation of the floristic and structural composition of the natural regeneration (0.10 <height <3.0 m; CAP ≤ 15 cm) were evaluated in disturbed area of middle stage secondary forest fragment and pasture, in Semideciduous Seasonal Environment of Nova Iguaçu (RJ). The floristic survey was done during rain period (145 mm) as well as drought (15 mm) along the year 2008. It was used phytosociology point method. The results evidenced emergency of 8 species (creepers 37.50% and shrub 37.50%) in forest, and 7 species (71.43% herbaceous) in pasture. Diversity and kind of habit of species in regeneration in the forest point to adaptation of permanent species to the ecological system with marked drought period, as the climatic effects quickly affect population dynamics of the ecosystems in restoration phase. Keywords: Seasonality; vegetable succession; forest restoration.
45
Sim, Jeannie. "Tropicalia: Gardens with Tropical Attitude." Queensland Review 10, no. 2 (November 2003): 1–24. http://dx.doi.org/10.1017/s1321816600003275.
Full textAbstract:
What is tropicalia? It's a garden that looks tropical. Hawaiian landscape architect Richard C. Tongg explained in 1960, ‘developing gardens on the theme of “tropicalia”, [means] making gardens in the tropics look the part, instead of being pale copies of other styles’. So what makes a garden look tropical? Earlier in the 1930s, Richard Tongg with garden writer Loraine E. Kuck provided the first clues to defining tropical garden character – three essential characteristics. I have argued there are other telltales from my research into early Queensland garden history. A summary of the qualities that distinguish tropical garden or landscape character is offered here: • a lush jungle-like density of planting (‘massed, crowded effects’);• ‘the selection of large-leaved plants’ (macrophyll-type leaves typical in rainforests);• ‘the enveloping growth of great-leaved creepers scrambling up tree trunks’;• components of the ‘Exotic Aspect’ (especially tropical-flavour plants and materials with visually striking (unusual) forms, and the use of bold, bright colours) including: ‐ certain iconic tropical species such as palms, bamboo, tropical fig trees, epiphytes (staghorn ferns, orchids, bird's nest ferns, etc.), and rainforest vines (lianes);‐ combining traditionally ecologically disparate species (e.g. pines and palms);‐ plant types that provide masses of colourful flowers and/or foliage (e.g. poinciana, jacaranda, acalypha, croton, etc.);‐ bold colour combinations (e.g. orange, hot pink and bluey-purple as in the flower of Bird of Paradise (Strelitzia reginae);‐ typical tropical shade gardening practices such as verandah, bush-house and fernery gardening; and,• possible components of the ‘Bizarre Aspect’ as found in Queensland, included garden ornaments such as rustic constructions using giant clamshells and/or coral-stone, whalebones as giant arches, and found objects (especially seaside flotsam/jetsam, such as glass buoys).
46
Turner, Peter J., John K. Scott, and Helen Spafford. "Bridal Creeper (Asparagus asparagoides)–Invaded Sites with Elevated Levels of Available Soil Nutrients: Barrier to Restoration?" Invasive Plant Science and Management 4, no. 2 (April 2011): 212–22. http://dx.doi.org/10.1614/ipsm-d-10-00032.1.
Full textAbstract:
AbstractBridal creeper has become a serious environmental weed in southern Australia. Historically the invaded areas had low soil nutrient levels. However, our field surveys indicate that soils in bridal creeper–invaded areas have higher phosphorus and iron levels than soils in nearby native reference areas regardless of the proximity to agriculture or other disturbances. A glasshouse experiment was undertaken to determine the influence of increased nutrients on plants that co-occur with bridal creeper in order to (1) assess the impact of changed soil conditions and (2) predict the response of dominant species following the biological control of bridal creeper. The relative growth rate (RGR) of bridal creeper, two native shrubs (narrow-leaved thomasia [Thomasia angustifolia] and bluebell creeper [Billardiera heterophylla]), and an invasive exotic grass (annual veldt grass [Ehrharta longiflora]) were determined in three soil types: soil collected within a bridal creeper stand, soil collected from a nearby reference area, and a potting mix with nutrient levels higher than that recorded in the field. The plant species were chosen due to their association with bridal creeper. For example, the native species narrow-leaved thomasia was identified in a previous survey as the most abundant shrub at the invaded site where the soil was collected. The two other species, bluebell creeper and annual veldt grass, were identified from a previous seedbank trial as being abundant (in the seedbank) and able to readily germinate in invaded areas. When grown in either the bridal creeper–invaded soil or reference soil, bluebell creeper had significantly lower RGRs than narrow-leaved thomasia and annual veldt grass. However, as all these species showed increases in RGRs between reference soil and bridal creeper soil, this study indicates that for at least these three species the impact of increased nutrients may not be a barrier to the recovery of invaded areas following the control of bridal creeper.
47
Briskie, James V. "Frequency of Egg Rejection by Potential Hosts of the New Zealand Cuckoos." Condor 105, no. 4 (November 1, 2003): 719–27. http://dx.doi.org/10.1093/condor/105.4.719.
Full textAbstract:
Abstract Host-specific brood parasites use a limited diversity of host species to raise their young. The two species of parasitic cuckoo that occur in New Zealand, Shining Cuckoo (Chrysococcyx lucidus) and Long-tailed Cuckoo (Eudynamys taitensis), are both host specific despite the availability of other apparently suitable species to act as hosts. To determine if host specificity has been shaped by the widespread occurrence of egg rejection among potential hosts, I tested the response of nine native passerine species to brood parasitism by the experimental addition of artificial cuckoo eggs to their nests. Artificial Shining Cuckoo eggs were rejected at least some of the time in eight of nine species tested, but levels of rejection were generally low. The majority of hosts accepted artificial Long-tailed Cuckoo eggs, and only the Brown Creeper (Mohoua novaeseelandiae) rejected eggs of both cuckoos. The occurrence of egg rejection in species currently not used as hosts (e.g., New Zealand Robin [Petroica australis]) suggests that they may have been parasitized by cuckoos in the past. Although egg rejection appears to limit the number of species currently suitable as hosts, it is not clear why acceptor species such as Fantails (Rhipidura fuliginosa) and Bellbirds (Anthornis melanura) are rarely parasitized, nor why egg mimicry as a counteradaptation to rejector species such as Brown Creepers and the New Zealand Pipit (Anthus novaeseelandiae) is poorly developed. On islands with depauperate avifaunas such as New Zealand, it is possible that the evolution of antiparasite adaptations in a small number of potential hosts may restrict the ability of brood parasites to evolve generalist strategies of host use. Frecuencia de Rechazo de Huevos por Hospederos Potenciales de los Cucos de Nueva Zelanda Resumen. Los parásitos de cría hospedero-específico utilizan una diversidad limitada de especies hospederas para criar a sus pichones. Las dos especies de cucos parásitos que se encuentran en Nueva Zelanda, Chrysococcyx lucidus y Eudynamys taitensis, son hospedero-específicas a pesar de la disponibilidad de otras especies aparentemente apropiadas para servir como hospederas. Para determinar si la especificidad de hospedero ha sido moldeada por una alta frecuencia de rechazo de huevos por parte de los hospederos potenciales, puse a prueba la respuesta de nueve especies de paserinos nativos ante el parasitismo de cría añadiendo huevos de cucos en sus nidos experimentalmente. Los huevos artificiales de C. lucidus fueron rechazados al menos algunas veces en ocho de las nueve especies estudiadas, pero los niveles de rechazo fueron generalmente bajos. La mayoría de los hospederos aceptaron los huevos artificiales de E. taitensis, y sólo Mohoua novaeseelandiae rechazó los huevos de ambos cucos. La ocurrencia de rechazo de huevos en especies no utilizadas actualmente como hospederos (e.g., Petroica australis) sugiere que éstas podrían haber sido parasitadas por cucos en el pasado. Aunque el rechazo de huevos parece limitar el número de especies actualmente apropiadas para servir como hospederas, no es claro por qué especies que aceptan los huevos (como Rhipidura fuliginosa y Anthornis melanura) son raramente parasitadas, ni por qué está poco desarrollado el mimetismo de huevos como una contra-adaptación ante especies que rechazan los huevos (como M. novaeseelandiae y Anthus novaeseelandiae). En islas con avifaunas empobrecidas como Nueva Zelanda, es posible que la evolución de adaptaciones antiparásitos en un pequeño número de hospederos potenciales restrinja la habilidad de los parásitos de cría para evolucionar hacia estrategias generalistas de uso de hospederos.
48
Vanderwel, M. C., S. C. Mills, and J. R. Malcolm. "Effects of partial harvesting on vertebrate species associated with late-successional forests in Ontario’s boreal region." Forestry Chronicle 85, no. 1 (January 1, 2009): 91–104. http://dx.doi.org/10.5558/tfc85091-1.
Full textAbstract:
In the boreal forest region, partial-harvest silviculture has been garnering increasing interest as a means of maintaining wildlife species and habitat structure associated with late-successional forests. If late-successional species can find suitable habitat in partially harvested stands with a given level of structural retention, then partial harvesting might represent a viable silvicultural tool for maintaining wildlife dependent on mature or old-forest habitat within managed stands over time. Here we summarize literature on the responses of late-successional amphibians, birds, and mammals in Ontario’s boreal region to various intensities of partial harvesting. We assess species responses from comparisons of habitat use in harvested and unharvested stands; we do not explicitly consider impacts of partial harvesting applied over large areas across the landscape. At the stand scale, light-intensity harvesting (70% retention) negatively affects several passerine birds, as well as spruce grouse winter habitat, but most late-successional species (including all mammals and amphibians considered) appear to be tolerant of this level of habitat alteration. Moderate-intensity harvesting (50% retention) was found to reduce the abundance of about 40% of the species considered, particularly cavity- and snag-dependent species (martens, northern flying squirrels, owls) and passerine birds that forage or nest in the canopy and understory. High-intensity (30% retention) partial harvesting was found to provide unsuitable habitat for about one quarter of all late-successional species, including most forest raptors, pileated and black-backed woodpeckers, brown creepers, northern flying squirrels, and woodland caribou. Also, studies indicate that additional passerine bird species would decrease in abundance, as would small, moisture-dependent, terrestrial species such as short-tailed shrews, red-backed voles, and eastern red-backed salamanders. There is a need to strengthen our understanding of responses to partial harvesting for nonpasserine birds and large mammals, and to verify species responses through experimental studies within Ontario’s boreal region. Key words: structural retention, selection, shelterwood, seed tree, cavities, snags, downed woody debris, habitat suitability, amphibians, birds, mammals, biodiversity, review
49
Geleynse, Daniel M., Erica Nol, Dawn M. Burke, and Ken A. Elliott. "Brown Creeper (Certhia americana) demographic response to hardwood forests managed under the selection system." Canadian Journal of Forest Research 46, no. 4 (April 2016): 499–507. http://dx.doi.org/10.1139/cjfr-2015-0112.
Full textAbstract:
The Brown Creeper (Certhia americana Bonaparte, 1838) has been identified as one of the most sensitive passerines to partial forest harvest in North America. The effect of selection logging on Brown Creeper density, nest timing, nest survival, and nest and foraging site selection was examined in five silviculture treatments (intensive group selection, typical group selection, old single-tree selection, recent single-tree selection, and control forests) of Algonquin Provincial Park, Canada. As Brown Creeper nests under the bark of large, decaying trees, we hypothesized that Brown Creeper density, timing of breeding, nest survival, and nest and foraging site selection would be negatively affected by silviculture through the removal of large, decaying trees as part of providing safe conditions for loggers. We monitored 101 nests of Brown Creeper during the 2010 and 2011 breeding seasons, mapped territories to estimate density, and conducted foraging surveys. Brown Creeper density was reduced by about 42% in logged stands compared with control stands. Despite that, silviculture did not significantly alter timing of breeding or nest survival. However, the loss of large trees through partial harvesting meant that Brown Creeper nested closer to adjacent, small forested wetlands and often in balsam fir (Abies balsamea (L.) Mill.) in treated stands. In control stands, Brown Creeper nested further from forested wetlands, disproportionately in greater numbers in upland hardwoods, and preferentially in the bark of snags of yellow birch (Betula alleghaniensis Britton). The change in the species of tree used for nesting and the general forest type as a result of logging also resulted in consequences for the selection of foraging substrates. To maintain higher densities of Brown Creeper in logged stands in Algonquin Park, we recommend retaining larger diameter yellow birch, both snags and live trees, preferably within strategically located uncut reserves based on habitat supply planning, that maintains patches roughly the size of Brown Creeper territories (10 ha).
50
Kaspul, Kaspul. "Pengaruh Daun Tapak Kambing (Ipomoae pes-caprae) Terhadap Konsentrasi Spermatozoa Tikus Putih (Rattus norvegicus)." Wahana-Bio: Jurnal Biologi dan Pembelajarannya 11, no. 2 (December 19, 2019): 95. http://dx.doi.org/10.20527/wb.v11i2.11135.
Full textAbstract:
Reproductive continuity is an important problem for humans and animals, but sometimes reproductive disorders occur which results in decreased reproductive capacity. Goat’s foot creeper leaves have active compounds that act as antioxidants. Antioxidant compounds can maintain reproductive function. This study aims to determine the effect of Goat’s foot creeper leaves on the spermatozoa concentration of white rats. Twenty white rats male (4-week-old) were treated with a completely randomized trial design. There were 4 treatment groups with 5 replications: (1) no treatment; (2) treatment with 750 mg goat’s foot creeper infusion per day; (3) treatment with 1500 mggfoot creeper leaves per day. All treatment groups were administered for 30 days orally. The results showed an increase in spermatozoa concentration of white rats.