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Data from: Stable isotopes reveal links between human food inputs and urban ant diets
- 负责人：
- DOI：
- doi:10.5061/dryad.668n0
- 摘要：
- with urbanization. By contrast, we detected no differences in δ15N, suggesting Tetramorium feeds at the same trophic level despite shifting to human food
Geochemistry of sediment core Kinneret_AA3, supplement to: Quintana Krupinski, Nadine B; Marlon, Jennifer R; Nishri, Ami; Street, Joseph H; Paytan, Adina (2013): Climatic and human controls on the late Holocene fire history of northern Israel. Quaternary Research, 80(03), 396-405
- 负责人：
- 关键词：
- δ15N DEPTH, sediment\/rock AGE Calcium carbonate δ13C, carbonate δ18O, carbonate Carbon, organic, total δ13C, organic carbon Nitrogen, total Carbon\/Nitrogen ratio
- DOI：
- doi:10.1594/pangaea.885848
- 摘要：
- Long-term fire histories provide insight into the effects of climate, ecology and humans on fire activity; they can be generated using accumulation rates of charcoal and soot black carbon in lacustrine sediments. This study uses both charcoal and black carbon, and other paleoclimate indicators from Lake Kinneret (Sea of Galilee), Israel, to reconstruct late Holocene variations in biomass burning and aridity. We compare the fire history data with a regional biomass-burning reconstruction from 18 different charcoal records and with pollen, climate, and population data to decipher the relative impacts of regional climate, vegetation changes, and human activity on fire. We show a long-term decline in fire activity over the past 3070 years, from high biomass burning ~3070-1750 cal yr BP to significantly lower levels after ~1750 cal yr BP. Human modification of the landscape (e.g., forest clearing, agriculture, settlement expansion and early industry) in periods of low to moderate precipitation appears to have been the greatest cause of high biomass burning during the late Holocene in southern Levant, while wetter climate apparently reduced fire activity during periods of both low and high human activity.
Data from: Tracking the history and ecological changes of rising double-crested cormorant populations using pond sediments from islands in eastern Lake Ontario
- 负责人：
- DOI：
- doi:10.5061/dryad.6g206
- 摘要：
- to reference ponds not influenced by waterbirds. Geochemical tracers in dated sediment cores, particularly δ15N and chlorophyll-a concentrations, track waterbird
Data from: Sequential stable isotope analysis reveals differences in dietary history of three sympatric equid species in the Mongolian Gobi
- 负责人：
- Kaczensky, Petra
- 关键词：
- Asiatic wild ass feeding ecology isotope analysis isotopic dietary niche pasture competition Przewalski’s horse
- DOI：
- doi:10.5061/dryad.16r15
- 摘要：
- and were narrower than in the latter. Higher δ15N values point towards higher water use efficiency in khulan, which may be one reason why they can exploit
Data from: Hitting the moving target: modelling ontogenetic shifts with stable isotopes reveals the importance of isotopic turnover
- 负责人：
- Eric Hertz
- DOI：
- doi:10.5061/dryad.pp75d
- 摘要：
- . Stable isotope analysis is a powerful tool to assess these shifts, with δ15N providing a measure of trophic level and δ13C a measure of energy source. Previous applications
Data from: Seasonal and annual differences in the foraging ecology of two gull species breeding in sympatry and their use of fishery discards
- 负责人：
- Calado, Joana G.
- DOI：
- doi:10.5061/dryad.m8t2k
- 摘要：
- foraging areas (δ13C) and/ or trophic levels (δ15N) between the two species in the non-breeding season. During both the all-year and non-breeding period
Data from: Long-term belowground effects of grassland management: the key role of liming
- 负责人：
- Fornara, Dario
- 关键词：
- DOI：
- doi:10.5061/dryad.p0s23
- 摘要：
- , and (3) increases in AMF infection. Soil pH was also significantly related to greater N availability (i.e. soil NO3 levels) and to lower δ15N natural abundance, which
Data from: Drivers of individual niche variation in coexisting species
- 负责人：
- Costa-Pereira, Raul
- 关键词：
- stable isotopes species coexistence intraspecific variation Leptodactylus competition ecological opportunity diet Thin-toed frogs
- DOI：
- doi:10.5061/dryad.mq2h237
- 摘要：
- and stable isotopes (δ13C and δ15N) from frog species and their prey to quantify individual niche specialization. Then we combined data on local community
