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Academic literature on the topic 'Invertebrate'

Author: Grafiati

Published: 4 June 2021

Last updated: 11 March 2023

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Journal articles on the topic "Invertebrate"

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JABLONSKI, D. "The Invertebrate Record: Fossil Invertebrates." Science 238, no. 4830 (November 20, 1987): 1153. http://dx.doi.org/10.1126/science.238.4830.1153.

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Woolley, Leigh-Ann, Brett P. Murphy, Hayley M. Geyle, Sarah M. Legge, Russell A. Palmer, Chris R. Dickman, Tim S. Doherty, et al. "Introduced cats eating a continental fauna: invertebrate consumption by feral cats (Felis catus) in Australia." Wildlife Research 47, no. 8 (2020): 610. http://dx.doi.org/10.1071/wr19197.

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Abstract ContextRecent global concern over invertebrate declines has drawn attention to the causes and consequences of this loss of biodiversity. Feral cats, Felis catus, pose a major threat to many vertebrate species in Australia, but their effect on invertebrates has not previously been assessed. AimsThe objectives of our study were to (1) assess the frequency of occurrence (FOO) of invertebrates in feral cat diets across Australia and the environmental and geographic factors associated with this variation, (2) estimate the number of invertebrates consumed by feral cats annually and the spatial variation of this consumption, and (3) interpret the conservation implications of these results. MethodsFrom 87 Australian cat-diet studies, we modelled the factors associated with variation in invertebrate FOO in feral cat-diet samples. We used these modelled relationships to predict the number of invertebrates consumed by feral cats in largely natural and highly modified environments. Key resultsIn largely natural environments, the mean invertebrate FOO in feral cat dietary samples was 39% (95% CI: 31–43.5%), with Orthoptera being the most frequently recorded order, at 30.3% (95% CI: 21.2–38.3%). The highest invertebrate FOO occurred in lower-rainfall areas with a lower mean annual temperature, and in areas of greater tree cover. Mean annual invertebrate consumption by feral cats in largely natural environments was estimated to be 769 million individuals (95% CI: 422–1763 million) and in modified environments (with mean FOO of 27.8%) 317 million invertebrates year−1, giving a total estimate of 1086 million invertebrates year−1 consumed by feral cats across the continent. ConclusionsThe number of invertebrates consumed by feral cats in Australia is greater than estimates for vertebrate taxa, although the biomass (and, hence, importance for cat diet) of invertebrates taken would be appreciably less. The impact of predation by cats on invertebrates is difficult to assess because of the lack of invertebrate population and distribution estimates, but cats may pose a threat to some large-bodied narrowly restricted invertebrate species. ImplicationsFurther empirical studies of local and continental invertebrate diversity, distribution and population trends are required to adequately contextualise the conservation threat posed by feral cats to invertebrates across Australia.

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Beckett, David C., Thomas P. Aartila, and Andrew C. Miller. "Invertebrate abundance on Potamogeton nodosus: effects of plant surface area and condition." Canadian Journal of Zoology 70, no. 2 (February 1, 1992): 300–306. http://dx.doi.org/10.1139/z92-045.

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Using the macrophyte Potamogeton nodosus, we investigated variability in abundance of plant-dwelling invertebrates among individual plants. Plants were collected from three Potamogeton beds in Eau Galle Lake, Wisconsin, in June and August 1987. Invertebrate abundance on P. nodosus and the amount of plant surface area were positively correlated in both June and August. In August the amount of leaf damage (plant condition) was another important predictor of invertebrate abundance. Plant surface area and plant condition were responsible for most to almost all of the variability in invertebrate abundance on P. nodosus (R2 = 0.66 in June; R2 = 0.83 in August). The correlation between invertebrate abundance and plant condition in August and the lack of such a correlation in June indicated that plant age, rather than plant condition per se, was a causal mechanism for increased invertebrate abundance. Some plants were heavily colonized by invertebrates; a single plant collected in June held a total of 555 invertebrates, which included 177 chironomid larvae and 143 naidid worms. We estimate that the P. nodosus in a 20 × 60 m Potamogeton bed supported about 33 million invertebrates in June and approximately 30 million invertebrates in August. The use of lake management techniques in which plants are eliminated would therefore markedly reduce invertebrate abundance in the littoral zone, and would, in turn, deny fishes and waterfowl an important and abundant food resource.

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Santamaria, Brianna, Annemieke Verbeken, and Danny Haelewaters. "Mycophagy: A Global Review of Interactions between Invertebrates and Fungi." Journal of Fungi 9, no. 2 (January 26, 2023): 163. http://dx.doi.org/10.3390/jof9020163.

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Fungi are diverse organisms that occupy important niches in natural settings and agricultural settings, acting as decomposers, mutualists, and parasites and pathogens. Interactions between fungi and other organisms, specifically invertebrates, are understudied. Their numbers are also severely underestimated. Invertebrates exist in many of the same spaces as fungi and are known to engage in fungal feeding or mycophagy. This review aims to provide a comprehensive, global view of mycophagy in invertebrates to bring attention to areas that need more research, by prospecting the existing literature. Separate searches on the Web of Science were performed using the terms “mycophagy” and “fungivore”. Invertebrate species and corresponding fungal species were extracted from the articles retrieved, whether the research was field- or laboratory-based, and the location of the observation if field-based. Articles were excluded if they did not list at least a genus identification for both the fungi and invertebrates. The search yielded 209 papers covering seven fungal phyla and 19 invertebrate orders. Ascomycota and Basidiomycota are the most represented fungal phyla whereas Coleoptera and Diptera make up most of the invertebrate observations. Most field-based observations originated from North America and Europe. Research on invertebrate mycophagy is lacking in some important fungal phyla, invertebrate orders, and geographic regions.

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Munsch, Stuart H., Julie S. Barber, Jeffery R. Cordell, Peter M. Kiffney, Beth L. Sanderson, and Jason D. Toft. "Small invertebrates in bivalve-cultivated and unmodified habitats of nearshore ecosystems." Hydrobiologia 848, no. 6 (February 22, 2021): 1249–65. http://dx.doi.org/10.1007/s10750-021-04520-1.

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AbstractMany nearshore ecosystems are modified by aquaculture, including bivalve culture to produce food and restore extirpated populations. Small invertebrates in nearshore ecosystems support fundamental ecological processes, but the effects of bivalve culture on invertebrates are incompletely understood. Here, we compared invertebrate assemblages from multiple studies of bivalve-cultivated and unmodified nearshore habitats along the US west coast. In general, unmodified eelgrass and nearby off-bottom culture habitats with eelgrass present were inhabited by a greater abundance, richness, and diversity of epibenthic invertebrates than bottom culture and bare (mud, sand) habitats that both lacked eelgrass. Findings of individual studies suggested: minor differences in epibenthic invertebrate assemblages associated with various aquaculture practices; restoring native oysters to mudflats did not detectably alter epibenthic invertebrate abundances; epibenthic invertebrates were more abundant on shell hash introduced to mudflats than unmodified mudflats; and benthic invertebrates were less abundant, rich, and diverse in habitats cultured on bottom by Manila clams. Considering the range of these patterns, there appears to be potential for coastal communities to restore extirpated bivalve populations or develop bivalve culture practices that meet objectives to grow food while maintaining nearshore ecosystems’ fundamental processes supported by robust invertebrate assemblages.

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Alqaragholi, Sura Abdulghani, Wael Kanoua, and Patricia Göbel. "Comparative Investigation of Aquatic Invertebrates in Springs in Münsterland Area (Western Germany)." Water 13, no. 3 (January 30, 2021): 359. http://dx.doi.org/10.3390/w13030359.

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The main aim of this study was to investigate the abundance of invertebrates in groundwater in relation to groundwater conditions (groundwater table, discharge, rainfall, and physio-chemical parameters), and to examine the suitable time for invertebrate sampling in springs. Thus, eight springs in two separate study areas, “Baumberge” and “Schöppinger Berg” (Münsterland area, North-Rhine Westphalia in Germany), were sampled five times (24 h for 2–5 consecutive sampling days) between November 2018 and October 2019. The results showed high spatial and temporal variance. In general, the existence of invertebrates and stygobites increased, whereas invertebrate types decreased with increasing hydraulic head and spring discharge. Therefore, investigating the abundance of invertebrates and invertebrate species is recommended to be done separately. Abundance of invertebrates was affected by different factors in both areas. Spearman correlation test (two-tailed) and factor analyses (n = 80, p ≤ 0.01) highlighted the importance of detritus as the main controlling factor for invertebrate existence and stygobite individuals in Baumberge, whereas dissolved oxygen is essential for their existence in Schöppinger Berg.

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Melin, Amanda D., Linda M. Fedigan, Hilary C. Young, and Shoji Kawamura. "Can color vision variation explain sex differences in invertebrate foraging by capuchin monkeys?" Current Zoology 56, no. 3 (June 1, 2010): 300–312. http://dx.doi.org/10.1093/czoolo/56.3.300.

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Abstract Invertebrates are the main source of protein for many small-to-medium sized monkeys. Prey vary in size, mobility, degree of protective covering, and use of the forest, i.e. canopy height, and whether they are exposed or embed themselves in substrates. Sex-differentiation in foraging patterns is well documented for some monkey species and recent studies find that color vision phenotype can also affect invertebrate foraging. Since vision phenotype is polymorphic and sex-linked in most New World monkeys - males have dichromatic vision and females have either dichromatic or trichromatic vision - this raises the possibility that sex differences are linked to visual ecology. We tested predicted sex differences for invertebrate foraging in white-faced capuchins Cebus capucinus and conducted 12 months of study on four free-ranging groups between January 2007 and September 2008. We found both sex and color vision effects. Sex: Males spent more time foraging for invertebrates on the ground. Females spent more time consuming embedded, colonial invertebrates, ate relatively more “soft” sedentary invertebrates, and devoted more of their activity budget to invertebrate foraging. Color Vision: Dichromatic monkeys had a higher capture efficiency of exposed invertebrates and spent less time visually foraging. Trichromats ate relatively more “hard” sedentary invertebrates. We conclude that some variation in invertebrate foraging reflects differences between the sexes that may be due to disparities in size, strength, reproductive demands or niche preferences. However, other intraspecific variation in invertebrate foraging that might be mistakenly attributed to sex differences actually reflects differences in color vision.

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Weldi, Weldi. "Identifikasi Potensi Materi Ajar Invertebrata Di Area Pantai Kecamatan Serasan Pada Materi Pelajaran Ipa." Bio-Edu: Jurnal Pendidikan Biologi 5, no. 1 (April 26, 2020): 10–23. http://dx.doi.org/10.32938/jbe.v5i1.492.

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The beach in the Serasan sub-district is one of the beaches that has local potential that is underutilized. Therefore it is necessary to conduct research that is intended to provide information to teachers about the location that can be done outside the classroom learning process. This research uses descriptive qualitative and exploration methods. The technique of collecting data uses observation, collection, interviews, and documentation. The results of the study of the potential of invertebrate animals in the Coastal District of Serasan District consisted of invertebrate animals in the phylum Molluscs, Arthropods, Coelenterata, and Echinoderms. The local potential of Invertebrate animals in the Coastal District of Serasan District is in accordance with the learning objectives of Invertebrate (Animalia) material in class X, namely Determining the General Characteristics of Invertebrate Animals (body lining, body cavity, body symmetry, and replacement); Determine the life cycle of invertebrates; Determine the classification of invertebrates; determine the role of invertebrates (explain the role of animals for life). The local potential of Inveretebrata animals in the Pantai District of Serasan District as a place for the Biology High School learning process.

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KRAGTEN, S., W. L. M. TAMIS, E. GERTENAAR, S. M. MIDCAP RAMIRO, R. J. VAN DER POLL, J. WANG, and G. R. DE SNOO. "Abundance of invertebrate prey for birds on organic and conventional arable farms in the Netherlands." Bird Conservation International 21, no. 1 (January 27, 2010): 1–11. http://dx.doi.org/10.1017/s0959270910000079.

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SummaryAs a result of agricultural intensification, populations of farmland birds have been in steep decline for several decades. Reduction in food abundance has been mentioned as one factor behind these declines. Extensive farm management, such as use of organic methods, is expected to provide more food for birds. In this study we compared invertebrate prey abundance for birds during the breeding season between organic and conventional arable farms. We made comparisons for three different groups of birds: (1) birds feeding on soil-living invertebrates (earthworms), (2) birds feeding on ground-dwelling invertebrates and (3) birds feeding on aerial invertebrates. Invertebrate abundance was compared between organic and conventional farms, crop and non-crop habitats, and between crop and non-crop habitats under the same farm management. On organic sites, earthworm abundance was 2–4 times higher than on conventional sites, but no differences were found between crop types. Total abundance of ground-dwelling invertebrates did not differ between organic and conventional sites, but positive effects were found for several individual taxonomic groups, such as carabid beetles and spiders. On organic farms, invertebrate abundance was higher in carrots, cereals and onions compared to other crops; on conventional farms this was true for onions. When compared with most crops, ground-dwelling invertebrate abundance was low in uncropped field margins and on ditch banks. On organic farms, aerial invertebrate abundance was approximately 70% higher than on conventional farms. On cereal fields, aerial invertebrates were especially abundant.

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Côté, Mathieu, Jean Ferron, and Réjean Gagnon. "Invertebrate predation of postdispersal seeds and juvenile seedlings of black spruce (Picea mariana) in the boreal forest of eastern Canada." Canadian Journal of Forest Research 35, no. 3 (March 1, 2005): 674–81. http://dx.doi.org/10.1139/x05-001.

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We used an extensive vertebrate exclosure experiment to evaluate black spruce (Picea mariana (Mill.) B.S.P.) postdispersal seed and seedling predation by invertebrates in three boreal habitats of Eastern Canada: recent burn, sprucemoss, and lichen woodland. Between 9% and 19% of seeds were eaten by invertebrates. Seed predation was higher in recent burns than in sprucemoss and lichen woodlands. Abundance and diversity of potential invertebrate seed consumers sampled in pitfall traps also varied among habitat types. Among the invertebrate seed consumers sampled, Myrmica spp. (Hymenoptera: Formicidae) and Pterostichus adstrictus (Eschscholtz, 1823) (Coleoptera: Carabidae) were the most numerous; Formica spp. (Hymenoptera: Formicidae) and Pterostichus punctatissimus (Randall, 1838) (Coleoptera: Carabidae) were also present. Between 2% and 12% of juvenile black spruce seedlings were eaten by invertebrates. The most important seedling consumers were slugs (molluscs). Invertebrate predation of seeds and seedlings was highest (19% and 12%) in recent burns, indicating that invertebrate predation may significantly influence black spruce regeneration in these sites.

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Dissertations / Theses on the topic "Invertebrate"

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Pryke, James Stephen. "Conservation of the invertebrate fauna on the Cape Peninsula." Thesis, Link to the online version, 2008. http://hdl.handle.net/10019/1452.

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Rate, Stephen R., and n/a. "Invertebrate diversity and vegetation heterogeneity : plant-invertebrate relationships in indigenous New Zealand grasslands." University of Otago. Department of Botany, 2005. http://adt.otago.ac.nz./public/adt-NZDU20061025.144447.

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Spatial heterogeneity of the environment, as measured by floral diversity, composition and structure, is known to influence the distribution and diversity of invertebrates. Heterogeneity brought about by anthropogenic disturbance may be a threat to invertebrate diversity. This thesis investigates the impacts of vegetation heterogeneity at a range of scales on the diversity of invertebrate populations in modified high-altitude indigenous grasslands on the Rock and Pillar Range, Central Otago. Invertebrates were sampled in and on the edges of snow tussock fragments to assess whether species richness increased systematically with fragment area. Invertebrate composition was poorly related to fragment area, plant composition and environmental variables. Taxon richness, abundance and/or diversity for three invertebrate groups increased as fragment area decreased, perhaps reflecting an influx of species from the surrounding matrix. For snow tussock leaf invertebrates in autumn, richness and abundance were at least two times lower in tussocks exposed to the wind than those in the centre of fragments, suggesting selection of habitat may be based on microclimatic characteristics. Invertebrates were sampled from the bases of tussocks after they were clipped to simulate three levels of vertebrate grazing. Invertebrate community composition differed between sites and sampling dates but was unaffected by clipping treatment. At the higher altitude site invertebrate abundance was 1.45 times greater and Shannon-Wiener diversity (H�) 1.22 times lower than at the lower altitude site. The latter sampling date had higher abundance (2.12 times) and taxon richness (1.14 times) than the earlier date. Pitfall-trapped invertebrates in cushionfield, herbfield and snow tussock differed in community composition and often by taxon richness, abundance and diversity. Across habitats, plant composition, plant diversity and some environmental variables were correlated with invertebrate variables, but could not be separated from vegetation type. The invertebrates collected in the course of the study are listed. Four Phyla, eight Classes, 24 orders and over 300 taxa were recorded. Almost all taxa are endemic and many have limited distributions and/or are undescribed. A species list is provided with collection altitude, method and habitat type. Invertebrate assemblages from sites differing in altitude, vegetation type and level of habitat modification on the Rock and Pillar Range are compared. Sites differed in species composition and rank orders of abundance and richness. At lower elevations, invertebrate richness was at least 25% less, and standardised trap abundance at least 44% less, than that at the highest elevation. Richness and abundance of exotic invertebrates decreased with increasing altitude. This thesis highlights several points concerning the study of grassland invertebrates and heterogeneity on the Rock and Pillar Range. First, there are differences in invertebrate assemblages at a range of scales. Conserving invertebrate diversity will therefore require altitudinal sequences and different habitat types, including disturbed areas. At high elevations, tussock habitat may be disproportionately important due to its relative rarity. Second, the effects of disturbance on invertebrates were only visible at large spatial scales. Third, there is a paucity of research on New Zealand invertebrates, especially in regard to terrestrial disturbance, which has resulted in a shortfall of biological, distributional, taxonomic and ecological knowledge.

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Rotheray, Timothy Daniel. "Invertebrate grazing during mycelial interactions." Thesis, Cardiff University, 2008. http://orca.cf.ac.uk/54800/.

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Saprotrophic cord-forming basidiomycete fungi are major agents of wood decomposition in woodland and support the decomposer food-web. Limited resource availability and the abundance of mycelium in soil leads to competition between fungi. These fungal interactions are aggressive involving reallocation of mycelial biomass, pigment formation, changes in gene expression and enzyme synthesis. Collembola are abundant mycophagous invertebrates in woodlands and affect fungal morphology and growth. Experiments investigated the effects of collembola grazing on fungal interaction progression and the effects of these interactions on collembola behaviour and mortality. In British woodlands, the collembola Folsomia Candida and Protaphorura armata are common as are the cord-forming fungi Hypholoma fasciculare, Phallus impudicus, Phanerochaete velutina and Resinicium bicolor. Pairwise interactions between these fungi were investigated in agar and compressed soil microcosms. Multiple genetic isolates of two of the fungi studied were also used. Fungal morphology was affected by collembola grazing in soil- but less so in agar- microcosms. In particular, when interacting with H. fasciculare, grazing of P. velutina mycelia accelerated growth over the opposing mycelium but reduced extension over soil. This was associated with an increased ability to colonise the wood resource of H. fasciculare. Grazing did not reduce the transport efficiency of P. velutina but the estimated cost of biomass production rose more steeply with increasing area than in ungrazed systems. Despite changes in progression, interaction outcome was not generally substantially altered by grazing. Collembola exhibited strong preferences for certain mycelia during interactions but showed a change in preference in others. Collembola mortality on fungal interactions in agar microcosms also varied with the species interacting. There was limited evidence of attraction of collembola to the fungal interaction zone. Overall, the results suggest that collembola grazing may have important impacts on fungal species assemblage and their ability to extend in search of new resources.

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Strachan, Scott. "Invertebrate Resistance to Wetland Drying." Thesis, Strachan, Scott (2016) Invertebrate Resistance to Wetland Drying. PhD thesis, Murdoch University, 2016. https://researchrepository.murdoch.edu.au/id/eprint/29962/.

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In regions with a drying climate, as waterbodies dry out more frequently or for longer, species traits interact with aquatic habitat influencing assemblage composition in wetlands. This thesis aimed to identify potential refuges from increased temperatures and altered water regimes for wetland invertebrates that resist drying using resting stages in the sediment. Using the literature on desiccation-responses by freshwater invertebrates, I reviewed relationships between life histories and the degree of desiccation to which individuals are exposed. Sediment microhabitats that retain moisture were sampled, showing that they could provide microrefuges for invertebrates during seasonal drying. Dry sediment was sampled from two habitats (open water (OW) and fringing trees (FT)) in eight wetlands, sediment properties were measured, and invertebrate emergence from inundated damp and artificially dried sediment were observed. FT sediment was cooler, had higher organic matter content, water saturation potential and different invertebrate assemblage composition. For most species the effect of drying depended on habitat; effects included mortality, reduced abundance and increased abundance. False starts occur when dry wetlands receive brief, unseasonable periods of inundation that trigger invertebrate hatching, but then dry out causing abortive hatching. OW and FT sediments were exposed to false starts in the laboratory. In OW, abortive hatching occurred and new assemblages emerged from egg banks during the next inundation. In FT, invertebrates emerged rapidly and survived drying, continuing to develop into assemblages that did not differ from permanently inundated controls. Overall, this research showed that shallow seasonal wetlands contain refuges from higher temperatures and prolonged drying, explaining the resistance of their fauna to drought. To sustain wetland biodiversity, FT vegetation should be protected and replanted (where necessary) and wetland sediment should be protected from degrading processes such as sedimentation and eutrophication, so that it retains microrefuges.

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Dahl, Joakim Johnson Richard K. Sandin Leonard. "Detection of human-induced stress in streams : comparison of bioassessment approaches using macroinvertebrates /." Upsala : Swedish University of Agricultural Sciences, 2004. http://diss-epsilon.slu.se/archive/00000708/.

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Thesis (doctoral)--Swedish University of Agricultural Sciences, 2004.
Thesis documentation sheet inserted. Appendix reproduces three papers and manuscripts co-authored with R.K. Johnson and two papers co-authored with R.K. Johnson and L. Sandin. Includes bibliographical references. Also issued electronically via World Wide Web in PDF format; online version lacks appendix.

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Mayoral, Helen. "Particle Size, Critical Shear Stress, and Benthic Invertebrate Distribution and Abundance in a Gravel-bed River of the Southern Appalachians." Digital Archive @ GSU, 2011. http://digitalarchive.gsu.edu/geosciences_theses/31.

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To determine the relationship between the abundance and density of benthic invertebrates, and the critical shear stress of individual grain sizes, a reach along Smith Creek, was divided into ten 2m x 2m quadrants. Within each quadrant, five randomly selected clasts for each grain size ranging from 2.26 to 25.6 cm were cleaned for benthic invertebrates. Wolman pebble counts for each quadrant were also conducted and used to determine the critical Shields stress per grain size fraction from the model given by Wiberg and Smith (1987) that explicitly accounts for particle hiding/sheltering effects in mixed-bed rivers. Particle entrainment values were then compared with estimated bankfull Shields stress values to determine sediment transport potential during bankfull flow. Invertebrate abundance was strongly positively correlated with critical Shields stress up to the 18.0 cm grain size, indicating a preference for certain grain sizes; while density was positively correlated with all grain sizes present.

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Sharp, Koty. "Marine invertebrate-microbial bioactive metabolite symbioses." Diss., Connected to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2006. http://wwwlib.umi.com/cr/ucsd/fullcit?p3190794.

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Thesis (Ph. D.)--University of California, San Diego, 2006.
Title from first page of PDF file (viewed Mar. 15, 2006). Available via ProQuest Digital Dissertations. Vita. Includes bibliographical references.

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Pohe, Stephen Robert. "Aquatic invertebrate fauna of Matapouri, Northland." Click here to access this resource online, 2008. http://hdl.handle.net/10292/425.

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A study of the aquatic invertebrate communities from two locations (Location 1 and Location 2) within the Matapouri catchment in Northland, New Zealand, was conducted to assess community structure in differing local-scale habitats. Four data collection methods were utilised generating 33,058 adult or larval invertebrates. The sampling methods comprised benthic kick-sampling, sticky trapping, light trapping, and emergence trapping. For the sticky trapping and light trapping, sampling was carried out at three different sites (Sites 1–3) within each location. The sites were situated within three habitat types; native forest, native forest-fringe, and raupo wetland. Emergence trapping also commenced within the three sites, at both locations, but was discontinued after two months, due to the equipment being destroyed by consecutive flooding events (method described in Appendix 1). Benthic sampling was carried out within the Forest and Forest-fringe habitats. Benthic sampling, sticky trapping, and light trapping were carried out following a monthly schedule between June and November 2005. Conductivity, pH, and water temperature measurements were taken concurrently with benthic sampling on a monthly basis, while water velocity and substrate measurements were taken once to assist in habitat characterisation. Overall, 71 taxa were recorded by benthic sampling over the six month period, with a mean of approximately 30 taxa per site per month. In comparison with similar studies elsewhere in New Zealand, a figure of around 30 taxa per sample was high. The benthic macroinvertebrate fauna at all sites was dominated by Trichoptera (19 taxa), Diptera (16 taxa) and Ephemeroptera (10 taxa). This pattern of diversity is similar to that reported in other New Zealand studies. However, in contrast to previous studies, the leptophlebiid mayfly genus Deleatidium was not numerically dominant over the rest of the community, and other leptophlebiid genera (Acanthophlebia, Atalophlebioides, Mauiulus and Zephlebia) were equally represented, possibly reflecting niche partitioning between the groups. The genus Nesameletus was not recorded at any site, despite being one of the core mayfly species in New Zealand streams. The rare mayfly Isothraulus abditus was recorded at one of the forest locations. There are no published records of this species from Northland. Although acknowledged as another of the core New Zealand benthic taxa, the hydropsychid caddisfly Aoteapsyche was not recorded during the study. However, another hydropsychid, Orthopsyche, was commonly recorded, and these may be filling a similar niche to the Aoteapsyche genus. In contrast to the Trichoptera, Diptera, and Ephemeroptera, the Plecoptera fauna was relatively depauperate, probably reflecting the warmer climate of the region and lack of temperature-buffered spring-fed streams. Surprisingly, Zelandobius, a core New Zealand genus, was absent but is regularly recorded in Northland. A species of conservation interest, Spaniocercoides watti, currently recognised as a Northland endemic, was recorded in low numbers. There were no apparent trends in diversity or abundance of benthic invertebrates over time. Also, there were no significant differences in species diversity between the two locations. However, in many cases, taxa were more abundant at Location 2. This may have been due to steeper gradients at Location 2, and the consequent effects on substrate size and streambed stability, as all other physical factors appeared similar between locations. Although several significant differences of individual benthic taxa were recorded, no broad effect of habitat (sites) on species diversity was observable. However, at Location 2, abundances were significantly higher at Site 3 (Forest) compared to Site 2 (Forest-fringe). The reasons were uncertain, but may be attributed to higher retention of allochthonous organic materials, trapped by in-stream cover and larger substrates. Investigations of adult stages by sticky traps supported benthic results recording community compositions and abundances dominated by Trichoptera and Diptera. Plecoptera were poorly represented. Location 2 recorded higher abundances of taxa, particularly Ephemeroptera and Plecoptera. Investigations of adult stages by light traps however did not produce any statistically significant differences in abundances between sites, between locations, or between sites across locations, and it is believed to be due to limited sampling replication combined with some biases of light trapping. This study indicates that the aquatic invertebrate community at Matapouri is diverse but also reasonably representative. Several rare or uncommon insects inhabit the catchment. It is therefore important that Iwi and the local Landcare Group, who invited and supported this research, together with the Department of Conservation, continue their efforts in protecting these areas. The resident fauna have the capacity to restock areas downstream, which are intended to be improved and restored through sediment control and riparian management.

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Boyd, Sheree. "Benthic invertebrate assemblages and sediment characteristics." Click here to access this resource online, 2009. http://hdl.handle.net/10292/727.

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Cold seep ecosystems in the deep sea are fuelled by chemosynthetic processes based on methane emission to the sediment surface from gas hydrate disassociation, methanogenesis or thermogenic processes. While cold seep ecosystems have been studied in the last three decades worldwide, little is known about New Zealand’s cold seep habitats and associated fauna. A joint German-New Zealand cruise to the Hikurangi Margin in early 2007 enabled biological and sediment sampling to investigate the biological and sedimentological relationships and variability of seeps and their faunal diversity. Multi-disciplinary approaches were employed that included Xray radiography, stratigraphic descriptions, lebensspuren traces analysis, sediment grain size analysis, determination of total organic content, carbonate content and its stable isotopic composition, and analysis of benthic invertebrate assemblages of seep habitats. The results of this study revealed three distinctive habitats and associated fauna based on the sediment characteristics and faunal type. Habitat 1 includes all sites pertaining to Omakere Ridge, a seep-related habitat comprised of layers of very poorly sorted, sandy silt, shell hash and bands of methane-derived authigenic aragonitic carbonate nodules with low total organic content (TOC). Due to the characteristics of the sediments and death assemblages of molluscs, it is inferred that Habitat 1 methane seepage is actively diffusive, waning or dormant. Habitat 2 describes sites that are either non-seep or relic and applies to those at Bear’s Paw and Kaka. Habitat 2 constituted of shell hash overlain with very poorly sandy silt, and low carbonates content and low to medium TOC. Habitat 3 describes non-seep related habitats, and includes all sites of the Wairarapa region and one reference site from Kaka also falls into this category. Sediments for Habitat 3 constituted poorly sorted silt with high TOC and low carbonate content which can be explained by their close proximity to land and converging sea currents. The mineral components of the background siliciclastic sediments for all sites studied originated in the Tertiary mudstone of the East Coast Basin. The characteristics of seep habitats of the Hikurangi Margin were comparable to that of the Northern Hemisphere modern seep counterparts, although the abundance and distributions of seep fauna were low. Results from this research have enhanced our understanding on the spatial and variability of methane fluxes and their affects on the duration of cold seep ecosystems, especially for New Zealand. However, more such studies are essential to increase our understanding of seep sediments and explain disturbance-sediment-benthic invertebrate interactions.

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McClements, Julian Graeme. "Metallochemistry of zinc-replete invertebrate cuticles." Thesis, University of Southampton, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.261427.

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Books on the topic "Invertebrate"

1

Soliman, Gamil N. Invertebrate zoology: The mideastern invertebrate fauna. Cairo: Palm Press, 1996.

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Söderhäll, Kenneth, ed. Invertebrate Immunity. Boston, MA: Springer US, 2010. http://dx.doi.org/10.1007/978-1-4419-8059-5.

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Grosberg, Richard K., Dennis Hedgecock, and Keith Nelson, eds. Invertebrate Historecognition. Boston, MA: Springer US, 1988. http://dx.doi.org/10.1007/978-1-4613-1053-2.

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Lewbart, Gregory A., ed. Invertebrate Medicine. Oxford, UK: Wiley-Blackwell, 2011. http://dx.doi.org/10.1002/9780470960806.

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Ciancio, Aurelio. Invertebrate Bacteriology. Dordrecht: Springer Netherlands, 2016. http://dx.doi.org/10.1007/978-94-024-0884-3.

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Rinkevich, B., and W. E. G. Müller, eds. Invertebrate Immunology. Berlin, Heidelberg: Springer Berlin Heidelberg, 1996. http://dx.doi.org/10.1007/978-3-642-79735-4.

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Panel, Invertebrate Neuroscience. Invertebrate neuroscience. (Swindon): Science and Engineering Research Council, Biological Sciences Committee, 1985.

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Workshop, on the Mechanisms Ecology and Evolution of Historecognition in Marine Invertebrates (1987 Bodega Bay Calif ). Invertebrate historecognition. New York: Plenum Press, 1988.

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T, Anderson D., ed. Invertebrate zoology. Melbourne: Oxford University Press, 2001.

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Meglitsch, Paul A. Invertebrate zoology. 3rd ed. New York: Oxford University Press, 1991.

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Book chapters on the topic "Invertebrate"

1

Platt, Nicholas, and Stuart E. Reynolds. "Invertebrate Neuropeptides." In Comparative Invertebrate Neurochemistry, 175–226. Boston, MA: Springer US, 1988. http://dx.doi.org/10.1007/978-1-4615-9804-6_5.

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Lewbart, Gregory A. "Introduction." In Invertebrate Medicine, 3–6. Oxford, UK: Wiley-Blackwell, 2011. http://dx.doi.org/10.1002/9780470960806.ch1.

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Smith, Stephen A. "Horseshoe Crabs." In Invertebrate Medicine, 173–85. Oxford, UK: Wiley-Blackwell, 2011. http://dx.doi.org/10.1002/9780470960806.ch10.

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Pizzi, Romain. "Spiders." In Invertebrate Medicine, 187–221. Oxford, UK: Wiley-Blackwell, 2011. http://dx.doi.org/10.1002/9780470960806.ch11.

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Frye, Fredric L. "Scorpions." In Invertebrate Medicine, 223–34. Oxford, UK: Wiley-Blackwell, 2011. http://dx.doi.org/10.1002/9780470960806.ch12.

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Noga, Edward J., Amy L. Hancock, and Robert A. Bullis. "Crustaceans." In Invertebrate Medicine, 235–54. Oxford, UK: Wiley-Blackwell, 2011. http://dx.doi.org/10.1002/9780470960806.ch13.

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Chitty, John R. "Myriapods (Centipedes and Millipedes)." In Invertebrate Medicine, 255–65. Oxford, UK: Wiley-Blackwell, 2011. http://dx.doi.org/10.1002/9780470960806.ch14.

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Cooper, John E. "Insects." In Invertebrate Medicine, 267–83. Oxford, UK: Wiley-Blackwell, 2011. http://dx.doi.org/10.1002/9780470960806.ch15.

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Vidal-Naquet, Nicolas. "Honeybees." In Invertebrate Medicine, 285–321. Oxford, UK: Wiley-Blackwell, 2011. http://dx.doi.org/10.1002/9780470960806.ch16.

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Cooper, John E., and Daniel S. Dombrowski. "Butterfly Houses." In Invertebrate Medicine, 323–34. Oxford, UK: Wiley-Blackwell, 2011. http://dx.doi.org/10.1002/9780470960806.ch17.

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Conference papers on the topic "Invertebrate"

1

Thompson, Carmi Milagros, and Roger W. Portell. "DIGITAL INVERTEBRATES AND MORE: INVERTEBRATE PALEONTOLOGY IN THE 21ST CENTURY." In 68th Annual GSA Southeastern Section Meeting - 2019. Geological Society of America, 2019. http://dx.doi.org/10.1130/abs/2019se-327377.

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Busmachiu, Galina, Svetlana Bacal, Cristian Minzat, and Daniela Burduja. "New record of invertebrates associated with decomposed wood from the Plaiul Fagului reserve." In Xth International Conference of Zoologists. Institute of Zoology, Republic of Moldova, 2021. http://dx.doi.org/10.53937/icz10.2021.27.

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The paper presents new data about the diversity of invertebrates associated with decomposed wood from the Plaiul Fagului Reserve. A total of 60 invertebrate species belonging to 45 genera, 20 families and two classes Collembola and Insecta (Coleoptera and Hymenoptera) were identified. A rare species - Carabus intricatus and C. ullrichi included in the third edition of the Red Book were highlighted. Four new species of Coleoptera are recorded for the first time for the reserve

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Oldham, Jordan C. "INVERTEBRATE FOSSILS OF OHIO CAVERNS." In GSA 2020 Connects Online. Geological Society of America, 2020. http://dx.doi.org/10.1130/abs/2020am-359616.

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Sincage, Jamie P. "The world of invertebrate exhibitory." In 2016 International Congress of Entomology. Entomological Society of America, 2016. http://dx.doi.org/10.1603/ice.2016.107565.

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Barrio, Isabel C. "Measuring invertebrate herbivory in tundra." In 2016 International Congress of Entomology. Entomological Society of America, 2016. http://dx.doi.org/10.1603/ice.2016.108888.

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Tian, Jianghong, Pan Han, Xiaolong Deng, Royce E. Lindengren, Geng Liu, Yan Ren, and Haibo Dong. "Kinematics and Hydrodynamics of Invertebrate Undulatory Swimming." In ASME 2018 5th Joint US-European Fluids Engineering Division Summer Meeting. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/fedsm2018-83259.

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Dorsoventral undulation is adopted by aquatic mammals for propulsion. However, it is not too common to find invertebrate aquatic animals that undulate their bodies in the vertical plane, which results from antiphasic contractions of dorsal and ventral muscles. To explore the mechanisms of the soft-bodied propulsion, in this work, an annelid swimmer employing up and down undulatory swimming mode is chosen, and the related kinematics and hydrodynamics are studied using a combined experimental and computational approach. A fully calibrated photogrammetry system with three highspeed cameras from different views is used to record the forward swimming motion of this invertebrate swimmer, namely leech. The vertically undulating kinematics are then reconstructed from those videos. With the detailed reconstruction, the undulating wavelength and amplitude distribution the swimmer exhibits during propulsion are quantified. Kinematics analysis results show that the invertebrate swimmer swims in a vertical anguilliform mode and the wavelength is about 0.7BL (body length) when it swims at a velocity of 1.5BL/s. An in-house immersed-boundary-method based flow solver is used to conduct the numerical simulations, with which the hydrodynamic performance and wake structures are investigated. The thrust generation and power consumption of the undulating body are described quantitatively. Furthermore, along the undulating body, the pressure distributions are studied.

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Chahl, Javaan S., and Huajian Liu. "Bioinspired invertebrate pest detection on standing crops." In Bioinspiration, Biomimetics, and Bioreplication VIII, edited by Akhlesh Lakhtakia. SPIE, 2018. http://dx.doi.org/10.1117/12.2296580.

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Marshall, Charles R., Erica C. Clites, Nicole Bonuso, Edward Davis, Gregory P. Dietl, Patrick Druckenmiller, Ron Eng, et al. "DIGITIZATION OF MILLIONS OF MARINE INVERTEBRATE FOSSILS THROUGH THE EASTERN PACIFIC INVERTEBRATE COMMUNITIES OF THE CENOZOIC (EPICC) THEMATIC COLLECTIONS NETWORK (TCN)." In GSA Annual Meeting in Seattle, Washington, USA - 2017. Geological Society of America, 2017. http://dx.doi.org/10.1130/abs/2017am-299104.

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Williams, Daryl E., Jason Martinez, and Edward A. Martinez. "Invertebrate Bio-Accumulation in a Copper Sulfate Treated Reservoir." In 2013 New Mexico Geological Society Annual Spring Meeting. Socorro, NM: New Mexico Geological Society, 2013. http://dx.doi.org/10.56577/sm-2013.77.

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Noffke, Nora, Paul A. Selden, William Ausich, Noelia B. Carmona, Adriana Heimann Rios, Keyron Hickman-Lewis, Martin Homann, et al. "TREATISE OF INVERTEBRATE PALEONTOLOGY: A VOLUME DEDICATED TO PROKARYOTES." In GSA Connects 2022 meeting in Denver, Colorado. Geological Society of America, 2022. http://dx.doi.org/10.1130/abs/2022am-381982.

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Reports on the topic "Invertebrate"

1

Tronstad, Lusha. Aquatic invertebrate monitoring at Agate Fossil Beds National Monument: 2019 data report. National Park Service, April 2022. http://dx.doi.org/10.36967/nrds-2293128.

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Monitoring ecosystems is vital to understanding trends over time and key to detecting change so that managers can address perturbations. Freshwater streams are the lifeblood of the surrounding landscape, and their health is a measure of the overall watershed integrity. Streams are the culmination of upland processes and inputs. Degradation on the landscape as well as changes to the stream itself can be detected using biota living in these ecosystems. Aquatic invertebrates are excellent indicators of ecosystem quality because they are relatively long-lived, sessile, diverse, abundant and their tolerance to perturbation differs. Aquatic invertebrates were monitored at three sites along the Niobrara River at Agate Fossil Beds National Monument in 2019 completing 23 years of data using Hester-Dendy and Hess samplers. Hess samplers are artificial multi-plate samplers suspended in the water column to allow invertebrates to colonize and Hess samples collect invertebrates in a known area on natural substrate and vegetation. We identified 45 invertebrate taxa from four phyla (Annelida, Arthropoda, Mollusca, Nematoda) using both samplers in the Niobrara River (Appendix A and B). Hester-Dendy samplers collected 4 taxa not found in Hess samples and Hess samples collected 17 taxa not collected with Hester-Dendy samplers. Hess samples captured more (91%) than Hester-Dendy samples (62%). Crustacea, Diptera and Ephemeroptera were the most abundant groups of invertebrates collected in the Niobrara River. The proportion of Insecta, Annelida, Trichoptera and Diptera differed between Hester-Dendy and Hess samples (p < 0.05). EPT richness, proportion EPT taxa and Hilsenhoff’s Biotic Index (HBI) (p < 0.0001) differed between sampler types, but taxa richness, taxa diversity and evenness (p > 0.29) did not. We collected the highest density of invertebrates at the Agate Middle site. Agate Spring Ranch had the lowest taxa richness and HBI, and the highest proportion of EPT taxa. HBI at the sites ranged from 4.0 to 6.3 (very good to fair from Hilsenhoff 1987) using the Hester-Dendy and 5.2 to 6.9 (good to fairly poor from Hilsenhoff 1987) using the Hess sampler.

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Cummins, K. W. Pathogenic regulation of running water invertebrate populations. Office of Scientific and Technical Information (OSTI), January 1991. http://dx.doi.org/10.2172/7067065.

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Bowles, David, Michael Williams, Hope Dodd, Lloyd Morrison, Janice Hinsey, Tyler Cribbs, Gareth Rowell, Michael DeBacker, Jennifer Haack-Gaynor, and Jeffrey Williams. Protocol for monitoring aquatic invertebrates of small streams in the Heartland Inventory & Monitoring Network: Version 2.1. National Park Service, April 2021. http://dx.doi.org/10.36967/nrr-2284622.

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The Heartland Inventory and Monitoring Network (HTLN) is a component of the National Park Service’s (NPS) strategy to improve park management through greater reliance on scientific information. The purposes of this program are to design and implement long-term ecological monitoring and provide information for park managers to evaluate the integrity of park ecosystems and better understand ecosystem processes. Concerns over declining surface water quality have led to the development of various monitoring approaches to assess stream water quality. Freshwater streams in network parks are threatened by numerous stressors, most of which originate outside park boundaries. Stream condition and ecosystem health are dependent on processes occurring in the entire watershed as well as riparian and floodplain areas; therefore, they cannot be manipulated independently of this interrelationship. Land use activities—such as timber management, landfills, grazing, confined animal feeding operations, urbanization, stream channelization, removal of riparian vegetation and gravel, and mineral and metals mining—threaten stream quality. Accordingly, the framework for this aquatic monitoring is directed towards maintaining the ecological integrity of the streams in those parks. Invertebrates are an important tool for understanding and detecting changes in ecosystem integrity, and they can be used to reflect cumulative impacts that cannot otherwise be detected through traditional water quality monitoring. The broad diversity of invertebrate species occurring in aquatic systems similarly demonstrates a broad range of responses to different environmental stressors. Benthic invertebrates are sensitive to the wide variety of impacts that influence Ozark streams. Benthic invertebrate community structure can be quantified to reflect stream integrity in several ways, including the absence of pollution sensitive taxa, dominance by a particular taxon combined with low overall taxa richness, or appreciable shifts in community composition relative to reference condition. Furthermore, changes in the diversity and community structure of benthic invertebrates are relatively simple to communicate to resource managers and the public. To assess the natural and anthropo-genic processes influencing invertebrate communities, this protocol has been designed to incorporate the spatial relationship of benthic invertebrates with their local habitat including substrate size and embeddedness, and water quality parameters (temperature, dissolved oxygen, pH, specific conductance, and turbidity). Rigid quality control and quality assurance are used to ensure maximum data integrity. Detailed standard operating procedures (SOPs) and supporting information are associated with this protocol.

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Trench, Robert K. The Genetic Basis of Specificity in Dinoflagellate-Invertebrate Symbiosis. Fort Belvoir, VA: Defense Technical Information Center, September 1991. http://dx.doi.org/10.21236/ada242631.

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Taylor, B. R. Optimization of field and laboratory methods for benthic invertebrate biomonitoring. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1997. http://dx.doi.org/10.4095/306928.

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Cummins, K. W. Pathogenic regulation of running water invertebrate populations. Final progress report. Office of Scientific and Technical Information (OSTI), December 1991. http://dx.doi.org/10.2172/10158851.

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Matt Mulrennan, Matt Mulrennan. Studying the World's Largest Invertebrate - the Colossal Squid, Mesonychoteuthis hamiltoni. Experiment, April 2022. http://dx.doi.org/10.18258/26286.

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Taylor, B. R., and R. C. Bailey. Technical evaluation on methods for benthic invertebrate data analysis and interpretation. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1997. http://dx.doi.org/10.4095/306929.

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Bolton, T. E. Catalogue of type invertebrate fossils of the Geological Survey of Canada. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1992. http://dx.doi.org/10.4095/134067.

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Green, R. H. Review of potentially applicable approaches to benthic invertebrate data analysis and interpretation. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1999. http://dx.doi.org/10.4095/306930.

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