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89 results for “ecological surveys”
Figure 4 in Fish fauna survey on the Upper Maroni (French Guyana) between 2000 and 2002 with some ecological considerations
Figure 4. – Catch Per Unit Effort (CPUE) for each site.
Raw sequencing data for assembly processes inferred from eDNA surveys of a pond metacommunity are consistent with known species ecologies
Open the record for dataset details and reuse information.
Ruffed grouse (Bonasa umbellus) drumming surveys, 1987-2017, Adirondack Long-Term Ecological Monitoring Program Project No. 9 by Adirondack Ecological Center of the State University of New York College of Environmental Science and Forestry, Newcomb, New York. Environmental Data Initiative
The objective is to document long-term population trends of ruffed grouse in a northern hardwood ecosystem. The survey area is the Huntington Wildlife Forest, a 6,000 ha field station which receives no hunting pressure. Routes are surveyed starting an hour prior to sunrise on 2-5 mornings each year between April 14 and May 9 (occasionally later), on days when wind and rain are minimal to absent. Counts are standardized relative to weather conditions and timing. Observers count the number of individual ruffed grouse heard drumming (""drummers"") at 32-50 route stations during a 4-minute period. Trends at stations over time as well as overall drummer index are calculated and compared to independent datasets.
Seed Production Survey, 1988-2009, Adirondack Long-Term Ecological Monitoring Program Project No. 26 by Adirondack Ecological Center of the State University of New York College of Environmental Science and Forestry, Newcomb, New York, USA
The purpose of this project is to 1) estimate number of seeds per unit area in a mature northern hardwood/mixed conifer forest stand and 2) document changes over time in selected tree and shrub seed production. Permanent seed traps were established in 1988 in two forest types. Seed traps (13.9 L [5 gal] capacity buckets) are installed 0.5 m off the ground on two metal stakes in the center of each forested plot. Buckets are open to the tree canopy and have small (< 2cm) holes near the bottom edges for drainage. Fifty collection buckets are placed approximately 30 m (100 feet) apart and distributed along painted grid lines in the Huntington Wildlife Forest Natural Area. Twenty-five plots are northern hardwood upland forest (dominated by sugar maple, American beech and yellow birch with some conifers) and 25 plots are in the mixed hardwood/conifer lakeshore forest type (dominated by red maple, yellow birch, red spruce and eastern hemlock). Tree and shrub seeds are collected annually during two periods: July to November (Fall) and November to July (Spring). The spring and autumn collections are based on tree species’ seed phenology. If a bucket was tipped over due to disturbance by a bear or some other factor, it was censored from the survey for that year. Mice or other seed predators that were physically found/present in buckets also resulted in sample censoring. Animal scat or partly-consumed seeds are not censored, as these may have fallen from the tree canopy during seed predators’ normal activities.
EDI and NEON dataset descriptions and coverage to support the paper "ecocomDP: A flexible data design pattern for ecological community survey data"
This dataset contains an inventory for the paper entitled "ecocomDP: A flexible data design pattern for ecological community survey data" (O'Brien et al), submitted to Ecological Informatics. The paper describes an approach for harmonizing and reformatting community survey data such as organism abundance or cover measurements. Data currently using this data model and workflow approach are from the repository of the Environmental Data Initiative (EDI), the Long Term Ecological Research (LTER) Network, and the National Ecological Observatory Network (NEON). Data were assembled for this analysis in late 2020. The inventory is composed of two tables, describing data from EDI (including LTER) and data from NEON. The EDI inventory includes information for 70 datasets: identifiers for both the original and converted datasets, and basic coverage information such as temporal coverage (range of years and a measurement of sampling evenness), spatial coverage (maximum bounding coordinates and area of the "bounding box"), and taxonomic coverage (taxonomic classes). The NEON inventory contains information from 11 continent-wide NEON data products, divided into individual field sites to be more spatially compatible with EDI and LTER data. Taxonomic coverage is by group (e.g., algae, birds) rather than explicit taxonomic classes. Spatial coverage is the area of a field sampling site polygon. Temporal coverage includes the same minimum and maximum sampling years and temporal evenness measures as for the EDI data plus a count of months during that period when sampling occurred. At the time of data download, NEON data was considered provisional, however identifiers are persistent and now deliver final, "released" data. Also included in the data package is a script to reformat inventory data and create Figure 3 of the paper.
Ecological and social Interactions in urban parks: bird surveys in local parks in the central Arizona-Phoenix metropolitan area
Our central objective is to use small, neighborhood parks in Phoenix to study: (1) the ways in which ecological processes are influenced by human values, use, and management; and (2) the ways in which human attitudes and activities, and the services valued by humans, are influenced by ecological characteristics and processes. Elucidating this coupling in Phoenix parks will itself be a significant step towards understanding the complexities of human-nature interactions. The information gathered in addressing the central objective, though, can and should be used to assess potential trajectories for ecological processes. Our second objective is to develop trajectories for potential changes in ecosystem services in the Phoenix metropolitan area, given economic and demographic trends, and given the signal of human-nature interactions among different social groups.
Fig. 1 in Connecting systematic and ecological studies using DNA barcoding in a population survey of Drosophilidae (Diptera) from Mt Oku (Cameroon)
Fig. 1. Percent success and failure in obtaining a COI sequence from specimens. A. Total number of flies in the sample. B. Date of field collection (month indicated in lowercase Roman numerals). n = number of specimens used.
Inferring quantitative species interactions of seeds and seed-feeding carabid beetles from ecological survey data
<p>Here, we develop a trait-based approach suitable for creating quantitative networks, i.e. with varying interaction strengths. We applied this method to existing ecological survey data from an arable field of carabid ground beetles (Coleoptera: Carabidae) from pitfall traps and plant seeds from seed rain traps. We used existing data in the literature to predict a per-individual interaction cost index from carabid and seed size, based on frequency-dependent prey selection and the energetic intake of seeds by carabids. This was scaled up to the population level to create predicted inferred weighted networks using the sampled abundance of carabids and seeds, energetic intake rates in the literature, and assuming bottom up control. From this we calculated a novel predation pressure ratio which was the predicted seed predation (the sum of interaction strengths) relative to seed abundance.</p> <p>This is made available as an R markdown file with associated data files.</p>
Data from: Theoretical and empirical perspectives in ecology and evolution: a survey
Scientific research is often conceptually divided into empirical and theoretical approaches, and researchers often specialize as empiricists or theorists. Both approaches are essential to scientific progress, but interactions between the two groups have at times seemed problematic. I present results from a recent survey of 614 scientists (predominantly ecologists and evolutionary biologists) regarding interactions between theoretical and empirical work. Some overall themes emerged from these results. One theme is a widespread and mutual lack of trust, understanding, and interaction between empiricists and theorists. Another is a general desire, among almost all of the respondents, for greater understanding, more collaboration, and closer interactions between empirical and theoretical work. The final theme is that institutions, such as journals, funding agencies, and universities, are often seen as hindering such interactions. These results provide a clear mandate for institutional changes to improve interactions between theorists and empiricists in ecology and evolutionary biology.
Congruence of local ecological knowledge (LEK)-based methods and line-transect surveys in estimating wildlife abundance in Amazonian forests
<p>1) Effective estimation of wildlife population abundance is an important component of population monitoring, and ultimately essential for the development of conservation actions. Diurnal line transect surveys are one of the most applied methods for abundance estimations. Local ecological knowledge (LEK) is empirically acquired through the observation of ecological processes by local people. LEK-based methods have only been recognized as valid scientific methods for surveying fauna abundance in the last three decades. However, the agreement between both methods has not been extensively analysed.</p> <p>2) We compared concomitant abundance data for 91 wild species (mammals, birds and tortoises) from diurnal line transects (9,221 km of trails) and a LEK-based method (291 structured interviews) at 18 sites in Central and Western Amazonia. We used biological and socioecological factors to assess the agreements and divergences between abundance indices obtained from both methods.</p> <p>3) We found a significant agreement of population abundance indices for diurnal and game species. This relationship was also positive regardless of species sociality (solitary or social), body size and locomotion mode (terrestrial and arboreal); and of sampled forest type (upland and flooded forests). Conversely, we did not find significant abundance covariances for nocturnal and non-game species. Despite the general agreement between methods, line transects were not effective at surveying many species occurring in the area, with 40.2% and 39.8% of all species being rarely and never detected in at least one of the survey sites. On the other hand, these species were widely reported by local informants to occur at intermediate to high abundances.</p> <p>4) Although LEK-based methods have been long neglected by ecologists, our comparative study demonstrated their effectiveness for estimating vertebrate abundance of a wide diversity of taxa and forest environments. This can be used simultaneously with line transects surveys to calibrate abundance estimates and record species that are rarely sighted during surveys on foot, but that are often observed by local people during their daily extractive activities. Thus, the combination of local and scientific knowledge is a potential tool to improve our knowledge of tropical forest species and foster the development of effective strategies to meet biodiversity conservation goals. --</p>
Figure 4 from: Mammola S, Piano E, Giachino PМ, Isaia M (2017) An ecological survey of the invertebrate community at the epigean/hypogean interface. Subterranean Biology 24: 27-52. https://doi.org/10.3897/subtbiol.24.21585
Figure 4 - Annual trends of temperatures in the Pugnetto hypogean complex. The shade of blues indicate the relative position of the dataloggers at each cave-triplet, from the outermost (lighter blues) to the innermost sections (darker blues). Records from only one MSS-triplet are shown.
Figure 3 from: Mammola S, Piano E, Giachino PМ, Isaia M (2017) An ecological survey of the invertebrate community at the epigean/hypogean interface. Subterranean Biology 24: 27-52. https://doi.org/10.3897/subtbiol.24.21585
Figure 3 - a sampling holes (details) b Blocking screw c installation of an MSS-triplet d SSD of three different length e MSS-triplet buried in the ground f, g renewing the pitfall trap inside the SSD. Photo credits: Elena Piano.
Figure 2 from: Mammola S, Piano E, Giachino PМ, Isaia M (2017) An ecological survey of the invertebrate community at the epigean/hypogean interface. Subterranean Biology 24: 27-52. https://doi.org/10.3897/subtbiol.24.21585
Figure 2 - Map of the study area. The shape and the topographic position of the four caves (Borna Maggiore di Pugnetto, Tana del Lupo, Creusa d'le Tampe, Tana della Volpe) was obtained from the original planimetric drawings of Muratore (1946). The position of the sampling plots in caves ("cave triplets", C1–C8), in the MSS ("MSS triplets", M1–M8) and in the leaf litter ("epigean", L1–L6) are represented by coloured dots. The different sectors of the cave are coloured with different shades of grey representing the subjacency – i.e., vertical distance from the surface – according to Motta and Motta (2015).
Figure 6 from: Mammola S, Piano E, Giachino PМ, Isaia M (2017) An ecological survey of the invertebrate community at the epigean/hypogean interface. Subterranean Biology 24: 27-52. https://doi.org/10.3897/subtbiol.24.21585
Figure 6 - Predicted values (black line) and 95% confidence intervals (grey surface) of the effect of the sampling series (Serie_i) on the abundance of external elements in the MSS (a), on the species richness of external elements in the MSS (b) and on the abundance of external elements in the cave at subjacency of 0–20m (c) derived from GAMM analyses. Only fixed effects are shown.
Figure 1 from: Mammola S, Piano E, Giachino PМ, Isaia M (2017) An ecological survey of the invertebrate community at the epigean/hypogean interface. Subterranean Biology 24: 27-52. https://doi.org/10.3897/subtbiol.24.21585
Figure 1 - a Main entrance of the Borna di Pugnetto (photo credit: Alberto Chiarle and Mauro Paschetta, 2014) b Main entrance of the Creusa d'le Tampe (photo credit: Elena Piano, 2013) c exposed soil/MSS profile in a fresh-cut along a slope in the vicinity of the Borna di Pugnetto (photo credit: Jacopo Orlandini, 2014) d the typical cave geo-morphology within the Borna di Pugnetto (photo credit: Alberto Chiarle and Mauro Paschetta, 2014) e detail of the MSS geo-morphological structure (photo credit: Jacopo Orlandini, 2014).
Figure 5 from: Mammola S, Piano E, Giachino PМ, Isaia M (2017) An ecological survey of the invertebrate community at the epigean/hypogean interface. Subterranean Biology 24: 27-52. https://doi.org/10.3897/subtbiol.24.21585
Figure 5 - Boxplots showing the results of the regression analysis of the MSS (a–c) and the cave (d–f) data. Outlying values are not shown. Significance codes: < 0.001 ***; < 0.005 **; < 0.05 *.
Fig. 4 in Biodiversity survey, ecology and new distribution records of Marchantiophyta in a remnant of Brazilian Atlantic Forest
Fig. 4. Dendrogram based on UPGMA of the species composition of liverworts in the study fragment of dense montane ombrophilous forest in Parque Nacional de Boa Nova and other areas of Atlantic Forest in Brazil.
Figs. 2. A-D in Biodiversity survey, ecology and new distribution records of Marchantiophyta in a remnant of Brazilian Atlantic Forest
Figs. 2. A-D. Dicranolejeunea axilaris (Nees & Mont.) Schiffn. A. Ventral view of the gametophyte. B. Detail of leaves and underleaves. C. Ginoecium with perianth. D. Lobe cells.
Fig. 1 in Biodiversity survey, ecology and new distribution records of Marchantiophyta in a remnant of Brazilian Atlantic Forest
Fig. 1. Location of Parque Nacional de Boa Nova. The municipality of Boa Nova in the state of Bahia is circumscribed, and the location of the study site is indicated by the dot.
Figure 5 in Ecological surveys on the parthenogenetic Artemia populations in the hypersaline lakes of Anatolia, Turkey
Figure 5. Seasonal fluctuations in densities (ind. m–3) of Artemia and percentage of individuals subdivided in different age classes from Tersakan Lake.
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Allen Brain Atlas
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Annotated Behaviour and Observability Dataset (ABODe)
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DANDI Archive for NWB datasets
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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.