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276 results for “population biology”
Figure 6 in Comparative population biology of Uca rapax (Smith, 1870) (Brachyura, Ocypodidae) from two subtropical mangrove habitats on the Brazilian coast
Figure 6. Uca rapax. Recruitment in the Itamambuca and Ubatumirim habitats by season of the year. Small letters above bars compare the proportions of juveniles among seasons in the same site. Bars with at least one letter in common did not differ statistically (P.0.05).
Figure 1 in Comparative population biology of Uca rapax (Smith, 1870) (Brachyura, Ocypodidae) from two subtropical mangrove habitats on the Brazilian coast
Figure 1. Uca rapax. Median values (¡SD) of the organic matter content of the sediment at Itamambuca and Ubatumirim. The statistical comparisons were performed for each season between sites (Kruskal–Wallis, a50.05). White bars with at least one letter in common did not differ statistically.
Figure 3 in Population structure and breeding biology of the hairy crab Pilumnus vespertilio (Fabricius, 1793) (Crustacea: Brachyura: Pilumnidae) in southern Mozambique
Figure 3. Pilumnus vespertilio (Fabricius, 1793). Association between monthly juveniles (crabs of both sexes,15.1 mm CW) with temperature at Inhaca Island, southern Mozambique.
Figure 2 in Population structure and breeding biology of the hairy crab Pilumnus vespertilio (Fabricius, 1793) (Crustacea: Brachyura: Pilumnidae) in southern Mozambique
Figure 2. Pilumnus vespertilio (Fabricius, 1793). Monthly size–frequency distributions. White bars, males; grey bars, non-ovigerous females; black bars, ovigerous females.
Figure 1 in Population structure and breeding biology of the hairy crab Pilumnus vespertilio (Fabricius, 1793) (Crustacea: Brachyura: Pilumnidae) in southern Mozambique
Figure 1. Pilumnus vespertilio (Fabricius, 1793). Overall size–frequency distributions of all individuals collected at Inhaca Island.
Fig. 8 in Iheringichthys labrosus (Siluriformes: Pimelodidae) in the Piquiri River, Paraná, Brazil: population structure and some aspects of its reproductive biology
Fig. 8. Bimonthly variation of the mean values of the gonadosomatic index (GSI) of females (a) and males (b) of Iheringichthys labrosus in the Piquiri River from November 2002 to September 2003. (SD = Standard deviation).
Fig. 6 in Iheringichthys labrosus (Siluriformes: Pimelodidae) in the Piquiri River, Paraná, Brazil: population structure and some aspects of its reproductive biology
Fig. 6. Bimonthly variation of the mean values of the fullness index (FI) of females (a) and males (b) of Iheringichthys labrosus in the Piquiri River from November 2002 to September 2003. (SD = Standard deviation).
Fig. 4 in Iheringichthys labrosus (Siluriformes: Pimelodidae) in the Piquiri River, Paraná, Brazil: population structure and some aspects of its reproductive biology
Fig. 4. Length/weight relationship for females (a), males (b) and for both sexes (c) of Iheringichthys labrosus, obtained between November 2002 and September 2003 in the Piquiri River.
Fig. 3 in Iheringichthys labrosus (Siluriformes: Pimelodidae) in the Piquiri River, Paraná, Brazil: population structure and some aspects of its reproductive biology
Fig. 3. Length distribution of Iheringichthys labrosus captured in the Piquiri River from November 2002 to September 2003.
Fig. 2 in Iheringichthys labrosus (Siluriformes: Pimelodidae) in the Piquiri River, Paraná, Brazil: population structure and some aspects of its reproductive biology
Fig. 2. Catch per unit of effort, in number and biomass (number of individuals and kg/1000 m2 of net for 24 hours) of Iheringichthys labrosus, obtained at the sampling sites (a - number of individuals, b - biomass); shifts (c - number of individuals, d - biomass) and months (e - number of individuals, f - biomass) in the Piquiri River from November 2002 to September 2003.
Fig. 7 in Iheringichthys labrosus (Siluriformes: Pimelodidae) in the Piquiri River, Paraná, Brazil: population structure and some aspects of its reproductive biology
Fig. 7. Frequency of the gonadal development stage of Iheringichthys labrosus captured in the Piquiri River from November 2002 to September 2003.
Assessing the value of monitoring to biological inference and expected management performance for a European goose population
Open the record for dataset details and reuse information.
Demographic measures of Hypericum cumulicola (Hypericaceae) in 15 populations in Florida Rosemary Scrub patches with different time-since-fire, at Archbold Biological Station, Highlands County, Florida from 1994-2015
We collected demographic data comprising 38,313 unique observations from a sample of 10,910 individuals of H. cumulicola, from 15 independent Florida rosemary scrub patches with different time-since-fire at Archbold Biological Station, Highlands County, Florida. Plants were censused during their peak of reproduction annually in July and August between 1994 and 2015.
Long Term Research in Environmental Biology: Demographic census data for thirty natural populations of American Ginseng: 1998-2016
In 1998, formal demographic censusing of wild ginseng (Panax quinquefolius L.) populations was initiated in West Virginia. By 2004, thirty populations had been added to the census effort, spanning seven states (IN-2, KY-6, MD-1, NY-2, PA-2, VA-5, WV-12) and a wide variety of land use histories and eastern deciduous forest communities. The censusing effort continued without interruption at all populations until June, 2016. Annually, each population was visited twice. The first visit generally occurred between late May and the end of June. The second visit generally occurred in the first three weeks of August. The purpose of the spring census was to assess the population status at the time of year when the largest number of individuals were visible aboveground (post-germination, prior to substantial losses due to browsing and other causes). Detailed measures of plant size were made, with an emphasis on total leaf area calculation. In addition, a variety of plant condition notations were made, with the ultimate goal of determining mortality and recruitment in the population, as well as individual size transitions. The primary purpose of the second census each year was to assess seed production on each plant. In addition, further notations of plant condition were made to assess changes over the growing season. To maintain methodological consistency with field personnel turnover, the lead author participated in fieldwork throughout the study, visiting each population at least once every two years. In addition, after being trained themselves, graduate students trained undergraduate conservation interns to assure consistent methods were used each year. The data are suitable for demographic modeling, and the unique spatial and temporal extent allow the exploration of important questions about variability in population growth and viability of ginseng, America’s premiere wild harvested medicinal plant.
Local plant diversity and soybean biological control 2011 Harvest Measures:Biodiversity II: Effects of Plant Biodiversity on Population and Ecosystem Processes
Biodiversity II (E120) is designed to determine how the number of plant species affects the dynamics of ecological processes at the population, community, and ecosystem levels. By experimentally manipulating the number of species and the kinds of species, the amount of plant growth and the change from year to year, that result can be examined. Plots are large (9m x 9m actively maintained) and well-replicated, allowing responses of plant pathogens, insect herbivores, seed predators, soil parameters, invasive plant species and other variables to also be studied. Plots were seeded in May 1994 to have 1, 2, 4, 8, or 16 species, with roughly 30 replicates of each diversity level. The species composition of each plot was chosen by random draw from a pool of 18 grassland perennials that included four warm-season (C4) grasses, four cool-season (C3) grasses, four legumes, four non-legume forbs, and two woody species. All species occur in monoculture allowing comparison of responses of each species in monoculture to combinations of these same species. The experiment was established in 1994 by the lead investigators David Tilman, Peter Reich, Johannes Knops, and David Wedin. Experiment 120 is similar to Experiment 123, but it uses larger plots to provide a large capacity for long-term subexperiments.
Local plant diversity and soybean biological control 2012 Aphid Surveys:Biodiversity II: Effects of Plant Biodiversity on Population and Ecosystem Processes
Biodiversity II (E120) is designed to determine how the number of plant species affects the dynamics of ecological processes at the population, community, and ecosystem levels. By experimentally manipulating the number of species and the kinds of species, the amount of plant growth and the change from year to year, that result can be examined. Plots are large (9m x 9m actively maintained) and well-replicated, allowing responses of plant pathogens, insect herbivores, seed predators, soil parameters, invasive plant species and other variables to also be studied. Plots were seeded in May 1994 to have 1, 2, 4, 8, or 16 species, with roughly 30 replicates of each diversity level. The species composition of each plot was chosen by random draw from a pool of 18 grassland perennials that included four warm-season (C4) grasses, four cool-season (C3) grasses, four legumes, four non-legume forbs, and two woody species. All species occur in monoculture allowing comparison of responses of each species in monoculture to combinations of these same species. The experiment was established in 1994 by the lead investigators David Tilman, Peter Reich, Johannes Knops, and David Wedin. Experiment 120 is similar to Experiment 123, but it uses larger plots to provide a large capacity for long-term subexperiments.
Figure 4 in Population biology of the fiddler crab Uca maracoani (Crustacea, Ocypodidae) inhabiting an impacted mangrove area on the southern coast of São Paulo state, Brazil
Figure 4. Frequency of juveniles (%) of Uca maracoani by month.
Breeding biology of two populations of Chinese penduline tits
<p>The phenotypes and breeding behavior in one species may be different between populations. The local environments, social interactions can all lead to some variations in life history. The thorough investigations of breeding biology over populations can provide insights for us to understand the evolution and diversifications of breeding systems and phenotypic traits from multiple perspectives other than drawing monotonous associations between a factor and a trait. In this study, we explored two Chinese penduline populations, Liaohekou (LHK) and Xianghai (XH), both in the northeast of China located 550 km away from each other. A comparative study of the breeding biology was carried on in the two populations. We found that the climate has no obvious difference in these two populations but has different habitats. Nest emergence and egg-laying were earlier in the more northern population XH. Males in XH has a lower chance of pairing up with a female and exhibit mainly biparental care pattern instead uniparental care that we reported in LHK. The chick fledgling success in the biparental care nests was higher than in the uniparental care nests in XH, but no difference to the uniparental care nests in LHK. Besides, the penduline tits in the two populations were also significantly different in their wing length, tail length and beak shape. These incongruences suggested different food availability, adult sex ratio and migration distances of the two populations. Future studies should experimentally investigate the joint influences of breeding perspectives on the evolution of parental care and mating system.</p>
Figure 1 in Population biology of the ghost shrimps, Trypaea australiensis and Biffarius arenosus (Decapoda: Thalassinidea), in Western Port, Victoria.
Figure 1. Map of Australia showing the study sites located in Western Port: Warneet and Crib Point.
Fig. 1 in P R O J E C T S O N E M Y S O R B I C U L A R I S (R E P T I L I A: Testudines: Emydidae) In Latvia For Thirty Years (1984 - 2014): Biological Aspects, Results And Effect On Population And Ecosystems
Fig. 1. Old Emys orbicularis female, found in 1984 in Daugavpils (Photo: 1990).
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.