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Articoli di riviste sul tema "Dispersal"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 25 luglio 2025

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1

Roxburgh, Lizanne. "The effect of gut processing on the quality of mistletoe seed dispersal." Journal of Tropical Ecology 23, no. 3 (2007): 377–80. http://dx.doi.org/10.1017/s0266467407004014.

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Abstract (sommario):

Disperser effectiveness is the contribution that a disperser makes to the future reproduction of a plant (Schupp 1993), and it has two components: quality and quantity of dispersal. Quantity of dispersal is a function of the number of visits that a disperser makes to a fruiting plant and the number of seeds that are dispersed during each visit. Quality of dispersal is a function of the treatment that a seed receives from its disperser and the site that the seed is finally deposited in. The quality of seed dispersal of the mistletoe Phragmanthera dschallensis (Engl.) M.G. Gilbert (Loranthaceae)

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2

Kamler, Jan F., Warren B. Ballard, Eric M. Gese, Robert L. Harrison, and Seija M. Karki. "Dispersal characteristics of swift foxes." Canadian Journal of Zoology 82, no. 12 (2004): 1837–42. http://dx.doi.org/10.1139/z04-187.

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From 1997 to 2001, we monitored movements of 109 adult and 114 juvenile swift foxes, Vulpes velox (Say, 1823), at study sites in Colorado, New Mexico, and Texas to determine patterns of dispersal. Significantly more male (93%) than female (58%) juveniles dispersed, and both sexes had similar bimodal dispersal patterns with peaks in September–October and January–February. Adult dispersal occurred more evenly throughout the year, and significantly more male (32%) than female (5%) adults dispersed. Adult males tended to disperse after the death of their mate. Of dispersing foxes with known fates,

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3

Lei, Boyu, Jifa Cui, Chris Newman, et al. "Seed dispersers shape the pulp nutrients of fleshy-fruited plants." Proceedings of the Royal Society B: Biological Sciences 288, no. 1953 (2021): 20210817. http://dx.doi.org/10.1098/rspb.2021.0817.

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The dispersal-syndrome hypothesis posits that fruit traits are a product of selection by frugivores. Although criticized as adaptationist, recent studies have suggested that traits such as fruit or seed size, colour and odour exhibit signatures that imply selection by animal mutualists. These traits imply nutritional rewards (e.g. lipid, carbohydrate), attracting frugivores; however, this remains incompletely resolved. Here, we investigated whether fruit nutrients (lipid, sugar, protein, vitamin C, water content) moderate the co-adaptation of key disperser-group mutualisms. Multivariate techni

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4

Just, Michael G., Wade A. Wall, Stacy D. Huskins, and Matthew G. Hohmann. "Effects of Landscape Heterogeneity and Disperser Movement on Seed Dispersal." Ecologies 5, no. 2 (2024): 198–217. http://dx.doi.org/10.3390/ecologies5020013.

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The primacy of endozoochory for the maintenance and expansion of many woody plant populations is well known, but seed dispersal is not well understood for most species. This is especially true for rare species, where small population size and low fruit production can limit field- or observation-based experiments. Additionally, the effect of environmental heterogeneity on disperser movement is rarely investigated but has been shown to improve estimates of plant population spatial patterns and dynamics. We used simulation experiments to explore the effects of environmental heterogeneity and disp

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5

Rehm, E., E. Fricke, J. Bender, J. Savidge, and H. Rogers. "Animal movement drives variation in seed dispersal distance in a plant–animal network." Proceedings of the Royal Society B: Biological Sciences 286, no. 1894 (2019): 20182007. http://dx.doi.org/10.1098/rspb.2018.2007.

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Abstract (sommario):

Frugivores play differing roles in shaping dispersal patterns yet seed dispersal distance is rarely quantified across entire communities. We model seed dispersal distance using gut passage times and bird movement for the majority (39 interactions) of known bird–tree interactions on the island of Saipan to highlight differences in seed dispersal distances provided by the five avian frugivores. One bird species was found to be a seed predator rather than a disperser. The remaining four avian species dispersed seeds but differences in seed dispersal distance were largely driven by interspecific v

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6

McLellan, Bruce N., and Frederick W. Hovey. "Natal dispersal of grizzly bears." Canadian Journal of Zoology 79, no. 5 (2001): 838–44. http://dx.doi.org/10.1139/z01-051.

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We studied natal dispersal of grizzly bears (Ursus arctos), a solitary nonterritorial carnivore with a promiscuous mating system, between 1979 and 1998. Dispersal distances for 2-year-olds did not differ between males and females, but by 3 years of age, males had dispersed farther than females, and farther still by 4 years of age. Dispersal of both sexes was a gradual process, occurring over 14 years. From the locations of death, or last annual ranges, it was estimated that 18 males dispersed 29.9 ± 3.5 km (mean ± SE) and 12 females dispersed 9.8 ± 1.6 km. Eleven of these males dispersed the

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7

van de Meutter, Frank, Robby Stoks, and Luc de Meester. "Size-selective dispersal of Daphnia resting eggs by backswimmers ( Notonecta maculata )." Biology Letters 4, no. 5 (2008): 494–96. http://dx.doi.org/10.1098/rsbl.2008.0323.

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Freshwater zooplankton is increasingly used to study effects of dispersal on community and metacommunity structure. Yet, it remains unclear how zooplankton disperses. Clearly, birds and wind play a significant role as zooplankton dispersal agents, but they may not always be the main vectors. This experimental study shows that a cosmopolitan aquatic insect, Notonecta , can be an important vector of cladoceran resting eggs (ephippia). Dispersing Notonecta frequently transported ephippia during flight, with a bias towards smaller ephippia in two species. A similar trend was present at the species

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8

Nakamoto, Atsushi, Kazumitsu Kinjo, and Masako Izawa. "The role of Orii's flying-fox (Pteropusdasymallusinopinatus) as a pollinator and a seed disperser on Okinawa-jima Island, the Ryukyu Archipelago, Japan." Ecological Research 24, no. 2 (2009): 405–14. https://doi.org/10.5281/zenodo.13443318.

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(Uploaded by Plazi for the Bat Literature Project) The role of the Orii's flying-fox (Pteropus dasymallus inopinatus) as a pollinator and a seed disperser on Okinawa-jima Island was investigated by direct observations and radio-tracking from October 2001 until January 2006. We found that Orii's flying-fox potentially pollinated seven native plant species. Its feeding behavior and plant morphological traits suggested that this species is an important pollinator of Schima wallichii liukiuensis and Mucuna macrocarpa. The flying-fox also dispersed the seeds of 20 native plant species. The seeds of

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9

Nakamoto, Atsushi, Kazumitsu Kinjo, and Masako Izawa. "The role of Orii's flying-fox (Pteropusdasymallusinopinatus) as a pollinator and a seed disperser on Okinawa-jima Island, the Ryukyu Archipelago, Japan." Ecological Research 24, no. 2 (2009): 405–14. https://doi.org/10.5281/zenodo.13443318.

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Abstract (sommario):

(Uploaded by Plazi for the Bat Literature Project) The role of the Orii's flying-fox (Pteropus dasymallus inopinatus) as a pollinator and a seed disperser on Okinawa-jima Island was investigated by direct observations and radio-tracking from October 2001 until January 2006. We found that Orii's flying-fox potentially pollinated seven native plant species. Its feeding behavior and plant morphological traits suggested that this species is an important pollinator of Schima wallichii liukiuensis and Mucuna macrocarpa. The flying-fox also dispersed the seeds of 20 native plant species. The seeds of

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10

Nakamoto, Atsushi, Kazumitsu Kinjo, and Masako Izawa. "The role of Orii's flying-fox (Pteropusdasymallusinopinatus) as a pollinator and a seed disperser on Okinawa-jima Island, the Ryukyu Archipelago, Japan." Ecological Research 24, no. 2 (2009): 405–14. https://doi.org/10.5281/zenodo.13443318.

Testo completo

Abstract (sommario):

(Uploaded by Plazi for the Bat Literature Project) The role of the Orii's flying-fox (Pteropus dasymallus inopinatus) as a pollinator and a seed disperser on Okinawa-jima Island was investigated by direct observations and radio-tracking from October 2001 until January 2006. We found that Orii's flying-fox potentially pollinated seven native plant species. Its feeding behavior and plant morphological traits suggested that this species is an important pollinator of Schima wallichii liukiuensis and Mucuna macrocarpa. The flying-fox also dispersed the seeds of 20 native plant species. The seeds of

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11

Nakamoto, Atsushi, Kazumitsu Kinjo, and Masako Izawa. "The role of Orii's flying-fox (Pteropusdasymallusinopinatus) as a pollinator and a seed disperser on Okinawa-jima Island, the Ryukyu Archipelago, Japan." Ecological Research 24, no. 2 (2009): 405–14. https://doi.org/10.5281/zenodo.13443318.

Testo completo

Abstract (sommario):

(Uploaded by Plazi for the Bat Literature Project) The role of the Orii's flying-fox (Pteropus dasymallus inopinatus) as a pollinator and a seed disperser on Okinawa-jima Island was investigated by direct observations and radio-tracking from October 2001 until January 2006. We found that Orii's flying-fox potentially pollinated seven native plant species. Its feeding behavior and plant morphological traits suggested that this species is an important pollinator of Schima wallichii liukiuensis and Mucuna macrocarpa. The flying-fox also dispersed the seeds of 20 native plant species. The seeds of

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12

Nakamoto, Atsushi, Kazumitsu Kinjo, and Masako Izawa. "The role of Orii's flying-fox (Pteropusdasymallusinopinatus) as a pollinator and a seed disperser on Okinawa-jima Island, the Ryukyu Archipelago, Japan." Ecological Research 24, no. 2 (2009): 405–14. https://doi.org/10.5281/zenodo.13443318.

Testo completo

Abstract (sommario):

(Uploaded by Plazi for the Bat Literature Project) The role of the Orii's flying-fox (Pteropus dasymallus inopinatus) as a pollinator and a seed disperser on Okinawa-jima Island was investigated by direct observations and radio-tracking from October 2001 until January 2006. We found that Orii's flying-fox potentially pollinated seven native plant species. Its feeding behavior and plant morphological traits suggested that this species is an important pollinator of Schima wallichii liukiuensis and Mucuna macrocarpa. The flying-fox also dispersed the seeds of 20 native plant species. The seeds of

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13

Moses, Kara L., and Stuart Semple. "Primary seed dispersal by the black-and-white ruffed lemur (Varecia variegata) in the Manombo forest, south-east Madagascar." Journal of Tropical Ecology 27, no. 5 (2011): 529–38. http://dx.doi.org/10.1017/s0266467411000198.

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Abstract:Seed dispersal is a pivotal ecological process but remains poorly understood on Madagascar, where lemurs are key dispersers. The black-and-white ruffed lemur (Varecia variegata) possesses many behavioural and ecological attributes potentially conducive to effective seed dispersal, but no studies have investigated dispersal patterns in this species. This 3-mo study quantified aspects of the primary seed dispersal patterns generated by two Varecia variegata groups (7 individuals). Feeding and ranging behaviour was quantified using behavioural observation (345.6 h), dispersal quantity an

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14

Caughlin, T. Trevor, Jake M. Ferguson, Jeremy W. Lichstein, Pieter A. Zuidema, Sarayudh Bunyavejchewin, and Douglas J. Levey. "Loss of animal seed dispersal increases extinction risk in a tropical tree species due to pervasive negative density dependence across life stages." Proceedings of the Royal Society B: Biological Sciences 282, no. 1798 (2015): 20142095. http://dx.doi.org/10.1098/rspb.2014.2095.

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Overhunting in tropical forests reduces populations of vertebrate seed dispersers. If reduced seed dispersal has a negative impact on tree population viability, overhunting could lead to altered forest structure and dynamics, including decreased biodiversity. However, empirical data showing decreased animal-dispersed tree abundance in overhunted forests contradict demographic models which predict minimal sensitivity of tree population growth rate to early life stages. One resolution to this discrepancy is that seed dispersal determines spatial aggregation, which could have demographic conseque

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15

Stevenson, Pablo, and Adriana Guzmán. "Seed dispersal, habitat selection and movement patterns in the Amazonian tortoise, Geochelone denticulata." Amphibia-Reptilia 29, no. 4 (2008): 463–72. http://dx.doi.org/10.1163/156853808786230442.

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AbstractThe Amazonian tortoise Geochelone denticulata may play an important role in forest dynamics due to its highly frugivorous diet, ability to disperse viable seeds, and predilection for resting in forest gaps for thermoregulation. The purpose of our study was to evaluate the species' effectiveness as a seed disperser. We measured dispersal quantity (abundance of seeds in feces, frequency of droppings, and population density of the disperser) and dispersal quality (movement patterns, habitat use, germination rates of dispersed seeds, and recruitment probabilities of seedlings) in a SW Amaz

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16

Morales, Juan Manuel, and Tomás A. Carlo. "THE EFFECTS OF PLANT DISTRIBUTION AND FRUGIVORE DENSITY ON THE SCALE AND SHAPE OF DISPERSAL KERNELS." Ecology 87, no. 6 (2006): 1489–96. https://doi.org/10.5281/zenodo.13414613.

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Abstract (sommario):

(Uploaded by Plazi for the Bat Literature Project) For many plant species, seed dispersal is one of the most important spatial demographic processes. We used a diffusion approximation and a spatially explicit simulation model to explore the mechanisms generating seed dispersal kernels for plants dispersed by frugivores. The simulation model combined simple movement and foraging rules with seed gut passage time, plant distribution, and fruit production. A simulation experiment using plant spatial aggregation and frugivore density as factors showed that seed dispersal scale was largely determine

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17

Morales, Juan Manuel, and Tomás A. Carlo. "THE EFFECTS OF PLANT DISTRIBUTION AND FRUGIVORE DENSITY ON THE SCALE AND SHAPE OF DISPERSAL KERNELS." Ecology 87, no. 6 (2006): 1489–96. https://doi.org/10.5281/zenodo.13414613.

Testo completo

Abstract (sommario):

(Uploaded by Plazi for the Bat Literature Project) For many plant species, seed dispersal is one of the most important spatial demographic processes. We used a diffusion approximation and a spatially explicit simulation model to explore the mechanisms generating seed dispersal kernels for plants dispersed by frugivores. The simulation model combined simple movement and foraging rules with seed gut passage time, plant distribution, and fruit production. A simulation experiment using plant spatial aggregation and frugivore density as factors showed that seed dispersal scale was largely determine

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18

Morales, Juan Manuel, and Tomás A. Carlo. "THE EFFECTS OF PLANT DISTRIBUTION AND FRUGIVORE DENSITY ON THE SCALE AND SHAPE OF DISPERSAL KERNELS." Ecology 87, no. 6 (2006): 1489–96. https://doi.org/10.5281/zenodo.13414613.

Testo completo

Abstract (sommario):

(Uploaded by Plazi for the Bat Literature Project) For many plant species, seed dispersal is one of the most important spatial demographic processes. We used a diffusion approximation and a spatially explicit simulation model to explore the mechanisms generating seed dispersal kernels for plants dispersed by frugivores. The simulation model combined simple movement and foraging rules with seed gut passage time, plant distribution, and fruit production. A simulation experiment using plant spatial aggregation and frugivore density as factors showed that seed dispersal scale was largely determine

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19

Morales, Juan Manuel, and Tomás A. Carlo. "THE EFFECTS OF PLANT DISTRIBUTION AND FRUGIVORE DENSITY ON THE SCALE AND SHAPE OF DISPERSAL KERNELS." Ecology 87, no. 6 (2006): 1489–96. https://doi.org/10.5281/zenodo.13414613.

Testo completo

Abstract (sommario):

(Uploaded by Plazi for the Bat Literature Project) For many plant species, seed dispersal is one of the most important spatial demographic processes. We used a diffusion approximation and a spatially explicit simulation model to explore the mechanisms generating seed dispersal kernels for plants dispersed by frugivores. The simulation model combined simple movement and foraging rules with seed gut passage time, plant distribution, and fruit production. A simulation experiment using plant spatial aggregation and frugivore density as factors showed that seed dispersal scale was largely determine

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20

Morales, Juan Manuel, and Tomás A. Carlo. "THE EFFECTS OF PLANT DISTRIBUTION AND FRUGIVORE DENSITY ON THE SCALE AND SHAPE OF DISPERSAL KERNELS." Ecology 87, no. 6 (2006): 1489–96. https://doi.org/10.5281/zenodo.13414613.

Testo completo

Abstract (sommario):

(Uploaded by Plazi for the Bat Literature Project) For many plant species, seed dispersal is one of the most important spatial demographic processes. We used a diffusion approximation and a spatially explicit simulation model to explore the mechanisms generating seed dispersal kernels for plants dispersed by frugivores. The simulation model combined simple movement and foraging rules with seed gut passage time, plant distribution, and fruit production. A simulation experiment using plant spatial aggregation and frugivore density as factors showed that seed dispersal scale was largely determine

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21

Morales, Juan Manuel, and Tomás A. Carlo. "THE EFFECTS OF PLANT DISTRIBUTION AND FRUGIVORE DENSITY ON THE SCALE AND SHAPE OF DISPERSAL KERNELS." Ecology 87, no. 6 (2006): 1489–96. https://doi.org/10.5281/zenodo.13414613.

Testo completo

Abstract (sommario):

(Uploaded by Plazi for the Bat Literature Project) For many plant species, seed dispersal is one of the most important spatial demographic processes. We used a diffusion approximation and a spatially explicit simulation model to explore the mechanisms generating seed dispersal kernels for plants dispersed by frugivores. The simulation model combined simple movement and foraging rules with seed gut passage time, plant distribution, and fruit production. A simulation experiment using plant spatial aggregation and frugivore density as factors showed that seed dispersal scale was largely determine

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22

Longrich, Nicholas R., Jakob Vinther, R. Alexander Pyron, Davide Pisani, and Jacques A. Gauthier. "Biogeography of worm lizards (Amphisbaenia) driven by end-Cretaceous mass extinction." Proceedings of the Royal Society B: Biological Sciences 282, no. 1806 (2015): 20143034. http://dx.doi.org/10.1098/rspb.2014.3034.

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Worm lizards (Amphisbaenia) are burrowing squamates that live as subterranean predators. Their underground existence should limit dispersal, yet they are widespread throughout the Americas, Europe and Africa. This pattern was traditionally explained by continental drift, but molecular clocks suggest a Cenozoic diversification, long after the break-up of Pangaea, implying dispersal. Here, we describe primitive amphisbaenians from the North American Palaeocene, including the oldest known amphisbaenian, and provide new and older molecular divergence estimates for the clade, showing that worm liza

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23

Niebuhr, Bernardo Brandão, Sandra M. C. Cavalcanti, Ermeson A. Vilalba, et al. "Land Use Effects on the Space Use and Dispersal of an Apex Predator in an Ecotone Between Tropical Biodiversity Hotspots." Diversity 17, no. 6 (2025): 435. https://doi.org/10.3390/d17060435.

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Assessing the ranging and dispersal behavior of apex predators and its consequences for landscape connectivity is of paramount importance for understanding population and ecosystem effects of anthropogenic land use change. Here, we synthesize ranging and dispersal ecological information on pumas (Puma concolor) and present estimates of how different land uses affect the space use and dispersal of pumas on fragmented landscapes in an ecotone between biodiversity hotspots in southeastern Brazil. Additionally, we evaluate the effect of animal translocations on dispersal and movement patterns. Usi

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24

Hohmann, Matthew G., Wade A. Wall, Michael G. Just, and Stacy D. Huskins. "Multiple intrinsic and extrinsic drivers influence the quantity and quality components of seed dispersal effectiveness in the rare shrub Lindera subcoriacea." PLOS ONE 18, no. 3 (2023): e0283810. http://dx.doi.org/10.1371/journal.pone.0283810.

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Information about seed dispersal effectiveness (SDE) for plant species of conservation concern is rarely available to inform management strategies and actions. For Lindera subcoriacea (bog spicebush, Lauraceae), a rare endemic dioecious shrub of the southeastern United States, we examined the influence of two intrinsic and five extrinsic drivers on the number and proportion of seeds either dispersed, or predated pre- and post-dispersal. The number of seeds dispersed characterizes the quantitative component of SDE, while pre- and post-dispersal seed predation can affect the qualitative componen

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25

Yu, Ren-Yong, and Peter C. Van Welzen. "Historical biogeography of Trigonostemon and Dimorphocalyx (Euphorbiaceae)." Botanical Journal of the Linnean Society 192, no. 2 (2019): 333–49. http://dx.doi.org/10.1093/botlinnean/boz075.

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Abstract Trigonostemon and Dimorphocalyx are two morphologically similar genera in tropical Asia. We estimated their divergence times through a Bayesian clock analysis and reconstructed the historical biogeography using a likelihood analysis under the dispersal-extinction-cladogenesis (DEC) model and a statistical dispersal-vicariance analysis (S-DIVA). We have found that the two genera differ in their historical biogeography: Trigonostemon originated on the South-East Asian mainland, but one section dispersed to the Malay Peninsula and Borneo, where rapid speciation events occurred during the

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26

Tabassum, Samiya, and Stephen P. Bonser. "Allometry in the terminal velocity – dispersal architecture relationship explains variation in dispersal and offspring provisioning strategies in wind dispersed Asteraceae species." Australian Journal of Botany 65, no. 2 (2017): 149. http://dx.doi.org/10.1071/bt16180.

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Competition can simultaneously favour high dispersal ability (to transport offspring to more favourable habitats) and large seed size (to maximise offspring provisioning). In wind dispersed Asteraceae species, seeds are enclosed within an achene with hair-like projections from the achene form a pappus that acts as a parachute to aid in dispersal. There is potentially an allometric relationship between terminal velocity and pappus to achene volume ratio (dispersal architecture), with changes in dispersal architecture resulting in disproportionately high or low impacts on terminal velocity. We t

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27

Sahley, Catherine Teresa, Klauss Cervantes, Edith Salas, Diego Paredes, Victor Pacheco, and Alfonso Alonso. "Primary seed dispersal by a sigmodontine rodent assemblage in a Peruvian montane forest." Journal of Tropical Ecology 32, no. 2 (2016): 125–34. http://dx.doi.org/10.1017/s0266467416000043.

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Abstract:We examined quantity and quality components of primary seed dispersal for an assemblage of sigmodontine rodents in a high-elevation montane tropical forest in Peru. We collected faecal samples from 134 individuals belonging to seven rodent species from the subfamily Sigmodontinae (Cricetidae) over a 2-y period. We conducted seed viability tests for seeds found in faecal samples. We identified seeds from eight plant families (Bromeliaceae, Annonaceae, Brassicaceae, Ericaceae, Melastomatacae, Myrtaceae, Rosaceae, Solanaceae), nine genera and 13 morphospecies. The most abundant seeds bel

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Condit, Richard, Brian Hatfield, Patricia A. Morris, and Daniel P. Costa. "Quantifying dispersal between two colonies of northern elephant seals across 17 birth cohorts." PLOS ONE 18, no. 11 (2023): e0288921. http://dx.doi.org/10.1371/journal.pone.0288921.

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Dispersal drives extinction-recolonization dynamics of metapopulations and is necessary for endangered species to recolonize former ranges. Yet few studies quantify dispersal and even fewer examine consistency of dispersal over many years. The northern elephant seal (Mirounga angustirostris) provides an example of the importance of dispersal. It quickly recolonized its full range after near extirpation by 19th century hunting, and though dispersal was observed it was not quantified. Here we enumerate lifetime dispersal events among females marked as pups at two colonies during 1994-2010, then

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Valdesolo, Tommaso, Silvia Del Vecchio, and Gabriella Buffa. "Patterns of Seed Dispersal in Coastal Dune Plant Communities." Sustainability 14, no. 17 (2022): 10983. http://dx.doi.org/10.3390/su141710983.

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Seed dispersal is a key determinant of species distribution, although it is still unclear how it contributes to species assembly in plant communities. We linked patterns of seed dispersal to coexisting species to investigate the role of dispersal in the species assembly process. We focused on 19 species coexisting in a foredune plant community, classified as “foredune foundation species”, “semi-fixed dune species,” and “alien species”. The number of seeds dispersed by the 19 species was monitored monthly in 25 plots for 12 months. Then we compared both dispersal strategies and dispersal phenol

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Pairon, Marie, Mathieu Jonard, and Anne-Laure Jacquemart. "Modeling seed dispersal of black cherry, an invasive forest tree: how microsatellites may help?" Canadian Journal of Forest Research 36, no. 6 (2006): 1385–94. http://dx.doi.org/10.1139/x06-018.

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Abstract (sommario):

We used empirical models and three dispersal functions (Weibull, lognormal and 2Dt) to model seed distributions derived from the black cherry (Prunus serotina Ehrh.) understorey of a pine-dominated stand. Two different approaches were used to disentangle the overlapping seed shadows: the traditional inverse modeling approach and the genetic approach that uses microsatellite markers to assign a dispersed seed to its maternal parent. The distinction was made between the seeds passively dispersed by gravity (fruits with mesocarp) and those dispersed by birds (fruits without mesocarp). Our main ob

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GITHIRU, MWANGI, LEON BENNUN, and LUC LENS. "Regeneration patterns among bird-dispersed plants in a fragmented Afrotropical forest, south-east Kenya." Journal of Tropical Ecology 18, no. 1 (2002): 143–49. http://dx.doi.org/10.1017/s0266467402002092.

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Abstract (sommario):

Fruit-eating birds play an important role in the seed dispersal of many tropical plants (e.g. Herrera 1984), and the foraging behaviour of avian frugivores may affect their seed-dispersal capabilities (Loiselle & Blake 1999,Schupp 1993, Traveset 1994). For instance,shorter visits tend to produce less clumped seed distributions (Graham et al. 1995). Also,avian frugivores often feed on the fruits of several plant species over short periods of time (Herrera 1984, 1988a; Levey et al. 1994) in some non-random pattern (Herrera 1998). This potentially produces a predictable spatial pattern of the

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Peña-Domene, Marinés, Cristina Martínez-Garza, Luz Ayestarán-Hernández, and Henry Howe. "Plant Attributes that Drive Dispersal and Establishment Limitation in Tropical Agricultural Landscapes." Forests 9, no. 10 (2018): 620. http://dx.doi.org/10.3390/f9100620.

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Factors that influence tropical-forest regeneration have been of interest across the tropics. We tested the degree of dispersal and establishment limitation of pioneer and non-pioneer tree species with different dispersal modes and seed sizes, using data on both seed fall and seedling establishment in primary forest, secondary forest, and pasture excluded from livestock. The study took place in a lowland tropical rain forest in southeastern Mexico. To calculate dispersal and establishment limitation, we used a density-weighted index that considers: (1) whether a seed or seedling of a given spe

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33

González-Varo, Juan P., Sarah Díaz-García, Juan M. Arroyo, and Pedro Jordano. "Seed dispersal by dispersing juvenile animals: a source of functional connectivity in fragmented landscapes." Biology Letters 15, no. 7 (2019): 20190264. http://dx.doi.org/10.1098/rsbl.2019.0264.

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Abstract (sommario):

Juvenile animals generally disperse from their birthplace to their future breeding territories. In fragmented landscapes, habitat-specialist species must disperse through the anthropogenic matrix where remnant habitats are embedded. Here, we test the hypothesis that dispersing juvenile frugivores leave a footprint in the form of seed deposition through the matrix of fragmented landscapes. We focused on the Sardinian warbler ( Sylvia melanocephala ), a resident frugivorous passerine. We used data from field sampling of bird-dispersed seeds in the forest and matrix of a fragmented landscape, sub

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34

Fang, Gu, Xiao-Min Gao, Dong Zhang, et al. "Lengthy leader male tenure delays male offspring dispersal in a primate multilevel society." Behaviour 156, no. 13-14 (2019): 1371–91. http://dx.doi.org/10.1163/1568539x-00003570.

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Abstract (sommario):

Abstract Natal dispersals are male-biased in most Old World monkey species, especially those that are polygynous. We examined patterns of male dispersal in golden snub-nosed monkeys, in which male offspring mainly disperse as juveniles from their natal one-male units (OMUs) to a bachelor group. However, out of a total of 112 male dispersals from 2001–2016, we documented six cases in which male offspring remained in their natal OMU until sub-adulthood. Based on monitoring of dispersal dynamics, we found that male offspring were more likely to delay dispersal if the tenure of leader males was le

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35

Simon, Thomas P., and Jacob L. Burskey. "Spatial Distribution and Dispersal Patterns of Central North American Freshwater Crayfish (Decapoda: Cambaridae) with Emphasis on Implications of Glacial Refugia." International Journal of Biodiversity 2014 (November 6, 2014): 1–7. http://dx.doi.org/10.1155/2014/282079.

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Abstract (sommario):

Spatial distributions of crayfish were evaluated in relation to glacial geography and possible modes of dispersal from refugia. Species dispersal patterns were a priori hypothesized and tested using principle components analysis (PCA). PCA factor loading plots were evaluated for hypothesized crayfish dispersal patterns. Cambarus laevis was limited to the unglaciated region, while Orconectes immunis, Orconectes virilis, and Procambarus gracilis may have dispersed from western glacial refugia in the upper Missouri drainage. Fallicambarus fodiens and Procambarus acutus dispersed from south of the

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36

Fall, Patricia L., and Taly Dawn Drezner. "Plant Dispersal, Introduced Species, and Vegetation Change in the South Pacific Kingdom of Tonga." Pacific Science 65, no. 2 (2011): 143–56. https://doi.org/10.5281/zenodo.13483577.

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Abstract (sommario):

(Uploaded by Plazi for the Bat Literature Project) Dispersal guilds hold key ecological implications for the vegetation history of islands. This study considers dispersal vectors in conjunction with species origin and growth form to characterize vegetation dynamics on the islands of Tonga in the South Pacific. Data for over 700 species compiled from published literature on the plants of Tonga support a comparative study of dispersal mechanisms and growth forms for native flora, species brought by Polynesian settlers, and taxa introduced since European contact. The indigenous flora, predominant

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37

Fall, Patricia L., and Taly Dawn Drezner. "Plant Dispersal, Introduced Species, and Vegetation Change in the South Pacific Kingdom of Tonga." Pacific Science 65, no. 2 (2011): 143–56. https://doi.org/10.5281/zenodo.13483577.

Testo completo

Abstract (sommario):

(Uploaded by Plazi for the Bat Literature Project) Dispersal guilds hold key ecological implications for the vegetation history of islands. This study considers dispersal vectors in conjunction with species origin and growth form to characterize vegetation dynamics on the islands of Tonga in the South Pacific. Data for over 700 species compiled from published literature on the plants of Tonga support a comparative study of dispersal mechanisms and growth forms for native flora, species brought by Polynesian settlers, and taxa introduced since European contact. The indigenous flora, predominant

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38

Fall, Patricia L., and Taly Dawn Drezner. "Plant Dispersal, Introduced Species, and Vegetation Change in the South Pacific Kingdom of Tonga." Pacific Science 65, no. 2 (2011): 143–56. https://doi.org/10.5281/zenodo.13483577.

Testo completo

Abstract (sommario):

(Uploaded by Plazi for the Bat Literature Project) Dispersal guilds hold key ecological implications for the vegetation history of islands. This study considers dispersal vectors in conjunction with species origin and growth form to characterize vegetation dynamics on the islands of Tonga in the South Pacific. Data for over 700 species compiled from published literature on the plants of Tonga support a comparative study of dispersal mechanisms and growth forms for native flora, species brought by Polynesian settlers, and taxa introduced since European contact. The indigenous flora, predominant

Gli stili APA, Harvard, Vancouver, ISO e altri

39

Fall, Patricia L., and Taly Dawn Drezner. "Plant Dispersal, Introduced Species, and Vegetation Change in the South Pacific Kingdom of Tonga." Pacific Science 65, no. 2 (2011): 143–56. https://doi.org/10.5281/zenodo.13483577.

Testo completo

Abstract (sommario):

(Uploaded by Plazi for the Bat Literature Project) Dispersal guilds hold key ecological implications for the vegetation history of islands. This study considers dispersal vectors in conjunction with species origin and growth form to characterize vegetation dynamics on the islands of Tonga in the South Pacific. Data for over 700 species compiled from published literature on the plants of Tonga support a comparative study of dispersal mechanisms and growth forms for native flora, species brought by Polynesian settlers, and taxa introduced since European contact. The indigenous flora, predominant

Gli stili APA, Harvard, Vancouver, ISO e altri

40

Fall, Patricia L., and Taly Dawn Drezner. "Plant Dispersal, Introduced Species, and Vegetation Change in the South Pacific Kingdom of Tonga." Pacific Science 65, no. 2 (2011): 143–56. https://doi.org/10.5281/zenodo.13483577.

Testo completo

Abstract (sommario):

(Uploaded by Plazi for the Bat Literature Project) Dispersal guilds hold key ecological implications for the vegetation history of islands. This study considers dispersal vectors in conjunction with species origin and growth form to characterize vegetation dynamics on the islands of Tonga in the South Pacific. Data for over 700 species compiled from published literature on the plants of Tonga support a comparative study of dispersal mechanisms and growth forms for native flora, species brought by Polynesian settlers, and taxa introduced since European contact. The indigenous flora, predominant

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41

Abedi-Lartey, Michael, Dina K.N. Dechmann, Martin Wikelski, Anne K. Scharf, and Jakob Fahr. "Long-distance seed dispersal by straw-coloured fruit bats varies by season and landscape." Global Ecology and Conservation 7 (June 7, 2016): 12–24. https://doi.org/10.5281/zenodo.14822250.

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Abstract (sommario):

(Uploaded by Plazi for the Bat Literature Project) On-going fragmentation of tropical forest ecosystems and associated depletion of seed dispersers threatens the long-term survival of animal-dispersed plants. These threats do not only affect biodiversity and species abundance, but ultimately ecosystem functions and services. Thus, seed dispersers such as the straw-coloured fruit bat, E. helvum, which traverse long distances across fragmented landscapes, are particularly important for maintaining genetic connectivity and colonizing new sites for plant species. Using highresolution GPS-tracking

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42

Sudipta, Biswas, and Kumar Bordolui Sanjoy. "Seed Dispersal Mechanisms: its Consequences at Population and Community Levels." Research and Reviews: Journal of Environmental Sciences 3, no. 3 (2021): 1–13. https://doi.org/10.5281/zenodo.5497223.

Testo completo

Abstract (sommario):

<em>Seed dispersal</em><em> is very important for biodiversity conservation in plant kingdom. The landscape structure has strong effects on the distances travelled by seeds, regardless of whether they are dispersed by autochory or by<strong> </strong>allochory. Autochory means when dispersal is acquired by using the plant’s very own manner. Allochory means when seed dispersal obtained through outside manner like abiotic vectors such as the wind and biotic vectors. So, any type of concern, such as </em><em>habitat fragmentation</em><em> or habitat modification by an invasive plant species

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43

Vangen, Knut Morten, Jens Persson, Arild Landa, Roy Andersen, and Peter Segerström. "Characteristics of dispersal in wolverines." Canadian Journal of Zoology 79, no. 9 (2001): 1641–49. http://dx.doi.org/10.1139/z01-124.

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Abstract (sommario):

We studied patterns of dispersal and sizes of home ranges of juvenile wolverines (Gulo gulo). Mean dispersal age was 13 months for both male (n = 11) and female (n = 9) wolverines. Females displayed more variation in dispersal age (726 months) than males (718 months). Of the animals used in the dispersal analyses, all males and 69% of females dispersed. All sedentary females (n = 4) occupied their mother's territory when she died or shifted territory, and no females dispersed from a territory vacated by their mother. Competition for resources seemed to determine the female dispersal pattern,

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44

Kankam, Bright Obeng, and William Oduro. "Frugivores and fruit removal ofAntiaris toxicaria(Moraceae) at Bia Biosphere Reserve, Ghana." Journal of Tropical Ecology 25, no. 2 (2009): 201–4. http://dx.doi.org/10.1017/s0266467409005835.

Testo completo

Abstract (sommario):

In tropical forests, most individual fruit-bearing trees depend on frugivores for seed dispersal (Howe & Smallwood 1982, Wilson 1992). Seed dispersal enhances germination potential, provides an opportunity for seeds to escape predation under the parent plants, and reduces seedling numbers under parent trees (Şekercioğluet al. 2004). The way frugivores handle seeds and process them may influence the seed fate of many plants (Janzen 1971). The quantity of seeds dispersed and the quality of dispersal provided by frugivores impact plant fitness (Herrera & Jordano 1981). Schupp (1993) defin

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45

Kankam, Bright Obeng, and William Oduro. "Frugivores and fruit removal of Antiaris toxicaria (Moraceae) at Bia Biosphere Reserve, Ghana." Journal of Tropical Ecology 25, no. 2 (2009): 201–4. https://doi.org/10.5281/zenodo.13450112.

Testo completo

Abstract (sommario):

(Uploaded by Plazi for the Bat Literature Project) In tropical forests, most individual fruit-bearing trees depend on frugivores for seed dispersal (Howe & Smallwood 1982, Wilson 1992). Seed dispersal enhances germination potential, provides an opportunity for seeds to escape predation under the parent plants, and reduces seedling numbers under parent trees (Şekercioğlu et al . 2004). The way frugivores handle seeds and process them may influence the seed fate of many plants (Janzen 1971). The quantity of seeds dispersed and the quality of dispersal provided by frugivores impact plant fitn

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46

Kankam, Bright Obeng, and William Oduro. "Frugivores and fruit removal of Antiaris toxicaria (Moraceae) at Bia Biosphere Reserve, Ghana." Journal of Tropical Ecology 25, no. 2 (2009): 201–4. https://doi.org/10.5281/zenodo.13450112.

Testo completo

Abstract (sommario):

(Uploaded by Plazi for the Bat Literature Project) In tropical forests, most individual fruit-bearing trees depend on frugivores for seed dispersal (Howe & Smallwood 1982, Wilson 1992). Seed dispersal enhances germination potential, provides an opportunity for seeds to escape predation under the parent plants, and reduces seedling numbers under parent trees (Şekercioğlu et al . 2004). The way frugivores handle seeds and process them may influence the seed fate of many plants (Janzen 1971). The quantity of seeds dispersed and the quality of dispersal provided by frugivores impact plant fitn

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47

Kankam, Bright Obeng, and William Oduro. "Frugivores and fruit removal of Antiaris toxicaria (Moraceae) at Bia Biosphere Reserve, Ghana." Journal of Tropical Ecology 25, no. 2 (2009): 201–4. https://doi.org/10.5281/zenodo.13450112.

Testo completo

Abstract (sommario):

(Uploaded by Plazi for the Bat Literature Project) In tropical forests, most individual fruit-bearing trees depend on frugivores for seed dispersal (Howe & Smallwood 1982, Wilson 1992). Seed dispersal enhances germination potential, provides an opportunity for seeds to escape predation under the parent plants, and reduces seedling numbers under parent trees (Şekercioğlu et al . 2004). The way frugivores handle seeds and process them may influence the seed fate of many plants (Janzen 1971). The quantity of seeds dispersed and the quality of dispersal provided by frugivores impact plant fitn

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48

Kankam, Bright Obeng, and William Oduro. "Frugivores and fruit removal of Antiaris toxicaria (Moraceae) at Bia Biosphere Reserve, Ghana." Journal of Tropical Ecology 25, no. 2 (2009): 201–4. https://doi.org/10.5281/zenodo.13450112.

Testo completo

Abstract (sommario):

(Uploaded by Plazi for the Bat Literature Project) In tropical forests, most individual fruit-bearing trees depend on frugivores for seed dispersal (Howe & Smallwood 1982, Wilson 1992). Seed dispersal enhances germination potential, provides an opportunity for seeds to escape predation under the parent plants, and reduces seedling numbers under parent trees (Şekercioğlu et al . 2004). The way frugivores handle seeds and process them may influence the seed fate of many plants (Janzen 1971). The quantity of seeds dispersed and the quality of dispersal provided by frugivores impact plant fitn

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49

Kankam, Bright Obeng, and William Oduro. "Frugivores and fruit removal of Antiaris toxicaria (Moraceae) at Bia Biosphere Reserve, Ghana." Journal of Tropical Ecology 25, no. 2 (2009): 201–4. https://doi.org/10.5281/zenodo.13450112.

Testo completo

Abstract (sommario):

(Uploaded by Plazi for the Bat Literature Project) In tropical forests, most individual fruit-bearing trees depend on frugivores for seed dispersal (Howe & Smallwood 1982, Wilson 1992). Seed dispersal enhances germination potential, provides an opportunity for seeds to escape predation under the parent plants, and reduces seedling numbers under parent trees (Şekercioğlu et al . 2004). The way frugivores handle seeds and process them may influence the seed fate of many plants (Janzen 1971). The quantity of seeds dispersed and the quality of dispersal provided by frugivores impact plant fitn

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50

Gorchov, David L., Xanic J. Rondon, Fernando Cornejo, Robert L. Schaefer, Julia M. Janosko, and Greg Slutz. "Edge effects in recruitment of trees, and relationship to seed dispersal patterns, in cleared strips in the Peruvian Amazon." Ecological Research 28, no. 1 (2013): 53–65. https://doi.org/10.5281/zenodo.13467767.

Testo completo

Abstract (sommario):

(Uploaded by Plazi for the Bat Literature Project) Abstract We investigated the spatial pattern of tree recruitment 15 years after clear‐cutting in two logged strips in the Peruvian Amazon, focusing on differences between seed dispersal modes and cohorts, and relating these to spatial patterns of seed dispersal in the years immediately following clearing. Most trees that recruited in logged strips belonged to taxa dispersed by birds or nonvolant mammals, with smaller numbers dispersed by bats or wind. Seed dispersal patterns differed, with few mammal‐dispersed seeds reaching strips, bird‐dispe

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