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1,445 results for “species richness.”
Community composition, richness, and density of endobionts from two sponge species in Crete, Greece, June 2021
These data was collected as part of a study titled "The “Single Hotel” hypothesis – Does sponge abundance affect endobionts’ diversity?" that was conducted in the island of Crete, Greece in June 2021. It includes collection of 30 sponge specimens of the common species (Agelas oroides and Sarcotragus foetidus) via SCUBA diving, their dissection and removal and identification of all endobionts living withing them (macroinvertebrates). The diversity of endobionts was then calculated and correlated with sponge properites (such as volume), and the sponges area and site of collection.
Data for study Conventional land-use intensification reduces species richness and increases production: A global meta-analysis
Most current research on land‐use intensification addresses its potential to either threaten biodiversity or to boost agricultural production. However, little is known about the simultaneous effects of intensification on biodiversity and yield. To determine the responses of species richness and yield to conventional intensification, this dataset was created and a global meta‐analysis on it was carried out, thus synthesizing 115 studies. The dataset consists of 449 cases that cover a variety of areas used for agricultural (crops, fodder) and silvicultural (wood) production. It was found that across all production systems and species groups, conventional intensification is successful in increasing yield (grand mean + 20.3%), but it also results in a loss of species richness (−8.9%). However, analysis of sub‐groups revealed inconsistent results. Within high‐intensity systems species losses were non‐significant but yield gains were substantial (+15.2%). Conventional intensification within medium intensity systems revealed the highest yield increase (+84.9%) and showed the largest loss in species richness (−22.9%). Production systems differed in their magnitude of richness response, with insignificant changes in silvicultural systems and substantial losses in crop systems (−21.2%). In addition, this meta‐analysis identifies a lack of studies that collect robust biodiversity (i.e. beyond species richness) and yield data at the same sites and that provide quantitative information on land‐use intensity. These findings suggest that, in many cases, conventional land‐use intensification drives a trade‐off between species richness and production. However, species richness losses were often not significantly different from zero, suggesting even conventional intensification can result in yield increases without coming at the expense of biodiversity loss. These results, which were published in a paper titled Conventional land‐use intensification reduces species richness and increa
SNE01 Species richness, community evenness (Evar) and ANPP effects of nitrogen addition across a gradient of 8 levels in a semi-arid shortgrass steppe and a mesic tallgrass prairie, 2014-2018
This dataset contains the first five years (2014-2018) of the effect of nitrogen addition on species richness, species evenness (Evar) and productivity for a long-term nitrogen addition gradient experiment in two North American grasslands: a semi-arid shortgrass steppe and a mesic tallgrass prairie. Fertilization with time-release urea has been on-going since 2014 in a gradient of eight levels: 0, 2.5, 5, 10, 15, 20, 30 g/m-2. The effect of nitrogen on richness, evenness and Aboveground Net Primary Productivity (ANPP g/m-2 yr) is calculated as the absolute change in value from control plots to treatment plots within each block.
MCR LTER: Coral Reef: Community Dynamics: Abundance and Species Richness of Fishes Associated with the Coral Porites rus 2000 thru 2011
These data describe the species richness and abundance as part of MCR LTER's reef fish monitoring program to track long-term patterns in species abundance and diversity. This study began in 2000 in the lagoons off of the north shore of the island of Moorea, French Polynesia and the dataset is updated annually. The abundance and life history stage (adults, juveniles or recruits) of all taxa of fishes associated with selected colonies (5-16 colonies per site) of the mound forming coral Porites rus are recorded at seven reef sites located along the north shore of Moorea. These sites are characterized by differences in water depth, distance to the fore reef and the number and types of neighboring corals. Counts are performed by a pair of divers using SCUBA and include semi-cryptic species. The collection of these data was suspended following the last survey conducted in July 2011 due to the extremely low abundance of live P. rus at these locations.
Aboveground net primary productivity, species composition and species richness data for NutNet site, 2007 - 2017
In 2007, a NutNet (http://www.nutnet.umn.edu/) site was established in a dry meadow site east of T-van on Niwot Ridge to assess multiple resource limitation on alpine grassland productivity and species composition. Nutrient treatments were added every other year starting in 2008. Treatments consisted of eight levels of nutrient addition (control, N, P, micro, N+P, N+micro, P+micro, and N+P+micro), replicated across four blocks. Untreated controls and all-nutrient treatments were replicated twice within each block for a total of 40 experiment plots. Starting in 2016, Potassium (K) was added as potash (K2SO4) to plots treated with micronutrients. Baseline data on above-ground biomass was sampled in 2007, prior to fertilizer application. Biomass clipping was repeated in 2013 and species composition measured in 2013 and 2017.
Figure 2. Combined species discovery curve for 726 in Canopy assemblages and species richness of planthoppers (Hemiptera: Fulgoroidea) in the Ecuadorian Amazon
Figure 2. Combined species discovery curve for 726 planthopper canopy fogging samples from Onkone Gare (three collecting years) including select estimators of diversity. Total observed morphospecies was 573, with 26% represented as singletons. The averaged value of the diversity estimators is 740. Curves for species observed and diversity estimators failed to reach an asymptote.
Figure 2 in Prospects for using DNA barcoding to identify spiders in species-rich genera
Figure 2. Box-and-whisker plots of average intraspecific divergence for 16 genera represented by more than 3 species (Neriene, Pimoa, and Theridion were excluded). The life history of each genus is also indicated.
Figure 1 in Prospects for using DNA barcoding to identify spiders in species-rich genera
Figure 1. Cumulative number of spider species described over time, including only species that are currently valid (description years for all valid species follow Platnick 2009).
Figure 6 in The Ceratocanthinae of Ulu Gombak: high species richness at a single site, with descriptions of three new species and an annotated checklist of the Ceratocanthinae of Western Malaysia and Singapore (Coleoptera, Scarabaeoidea, Hybosoridae)
Figure 6. Photos of alive specimens taken in habitat at Ulu Gombak (photos © M. Maruyama, 2008). A Madrasostes variolosum B Madrasostes agostii C Madrasostes clypeale male D idem female E Eusphaeropeltis sp. b F Eusphaeropeltis sp. c.
Figure 8 in The Ceratocanthinae of Ulu Gombak: high species richness at a single site, with descriptions of three new species and an annotated checklist of the Ceratocanthinae of Western Malaysia and Singapore (Coleoptera, Scarabaeoidea, Hybosoridae)
Figure 8. Madrasostes mirificum sp. n.: A male genital segment (scale bar: 0,2 mm) B aedeagus (scale bar: 0,1 mm) C parameres in dorsal view (scale bar: 0,05 mm) D Madrasostes hasimi sp. n.: male genital segment (scale bar: 0,1 mm) E parameres (scale bar: 0,1 mm) F sclerite of internal sac of aedeagus (scale bar: 0,1 mm) G Madrasostes depressum: sclerite of internal sac of aedeagus (scale bar: 0,1 mm).
Figure 7 in The Ceratocanthinae of Ulu Gombak: high species richness at a single site, with descriptions of three new species and an annotated checklist of the Ceratocanthinae of Western Malaysia and Singapore (Coleoptera, Scarabaeoidea, Hybosoridae)
Figure 7. Pterorthochaetes tsurui sp. n.: A parameres in lateral view (scale bar: 0,1 mm) B parameres in dorsal view (scale bar: 0,1 mm) C female bursal sclerites (scale bar: 0,1 mm) D, sclerites of the internal sac of aedeagus (scale bar: 0,1 mm) E male genital segment (scale bar: 0,1 mm).
Figure 3 in The Ceratocanthinae of Ulu Gombak: high species richness at a single site, with descriptions of three new species and an annotated checklist of the Ceratocanthinae of Western Malaysia and Singapore (Coleoptera, Scarabaeoidea, Hybosoridae)
Figure 3. Ceratocanthinae of Ulu Gombak. A Pterorthochaetes insularis habitus dorsal B Pterorthochaetes sp. habitus dorsal C Pterorthochaetes tsurui sp. n. habitus dorsal D idem habitus lateral E Cyphopisthes sp. habitus dorsal.
Figure 5 in Prospects for using DNA barcoding to identify spiders in species-rich genera
Figure 5. Maximum intraspecific divergence compared with nearest-neighbor distance using all data for the four categories of topology: A monophyletic (133 cases), B nested (23 cases), C paraphyletic (28 cases), and D intermingled (16 case). See Methods for definitions. 89.7% of monophyletic and nested species fall above the 1:1 line, indicating the presence of a barcode gap, while 90.9% of paraphyletic and intermingled species fall below this line.
Figure 4 in Prospects for using DNA barcoding to identify spiders in species-rich genera
Figure 4. Maximum intraspecific divergence compared with nearest-neighbour distance of monophyletic morphospecies for all data and using only new data, which have been identified by a single spider taxonomist. Most species (92.5%) fall above the 1:1 line, indicating the presence of a "barcode gap".
Fig. 6 in Richness of Dendrocephalus (Branchiopoda, Anostraca) in Brazil with the description of two new species
Fig. 6. Dendrocephalus xikrini Rabet & Bozelli sp. nov., Ƌ. A. Branch 2D of the frontal appendage. B. Endopodite of the first limb. C. Endopodite of the second limb. D. Endopodite of the third limb. E. Endopodite of the fourth limb. Scale bar: 0.5 mm.
Fig. 1 in Richness of Dendrocephalus (Branchiopoda, Anostraca) in Brazil with the description of two new species
Fig. 1. Distribution of Brazilian Dendrocephalus Daday, 1908. The main biomes are indicated on the map, the empty black square delineates the hotspot of richness of Dendrocephalus in Brazil. The symbols are black except in the case of sympatry, where one of the species is in white.
Fig. 3 in Richness of Dendrocephalus (Branchiopoda, Anostraca) in Brazil with the description of two new species
Fig. 3. Dendrocephalus aranai Rabet & Lacau sp. nov., Ƌ. A. Branch 2D of the frontal appendage. B. Endopodite of the first limb. C. Endopodite of the second limb. D. Endopodite of the third limb. E. Endopodite of the fourth limb. Scale bar: 0.5 mm.
Fig. 2 in Richness of Dendrocephalus (Branchiopoda, Anostraca) in Brazil with the description of two new species
Fig. 2. Dendrocephalus aranai Rabet & Lacau sp. nov., Ƌ. A. Eye with a spine on the posterior edge. B. Basal part of the frontal appendage. C. Branch 2A of the frontal appendage. D. Branch 1V. E. Branch 2V. Scale bars: 1 mm.
Fig. 5 in Richness of Dendrocephalus (Branchiopoda, Anostraca) in Brazil with the description of two new species
Fig. 5. Dendrocephalus xikrini Rabet & Bozelli sp. nov., Ƌ. A. Eye with a spine on the posterior edge. B. Basal part of the frontal appendage. C. Branch 2A of the frontal appendage. D. Branch 1V. E. Branch 2V. Scale bars: 1 mm.
Fig. 4 in Richness of Dendrocephalus (Branchiopoda, Anostraca) in Brazil with the description of two new species
Fig. 4. Morphological variation in the frontal appendage of Dendrocephalus carajaensis Rogers, Gomes & Vieira, 2012, Ƌ. A–B. Branch 2A from two specimens. C–F. Sub-branch III of branch 2D from different specimens. Scale bars: 0.5 mm.
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These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
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.