Results 61 to 70 of about 24,017 (211)

Comparison Between Trophic Positions in the Barents Sea Estimated From Stable Isotope Data and a Mass Balance Model

Frontiers in Marine Science, 2022
The trophic position concept is central in system ecology, and in this study, trophic position (TP) estimates from stable-isotopes and an Ecopath mass-balance food web model for the Barents Sea were compared. Two alternative models for estimating TP from
Torstein Pedersen
doaj   +1 more source

The nitrogen isotope effect of benthic remineralization-nitrification-denitrification coupling in an estuarine environment [PDF]

, 2011
The nitrogen (N) stable isotopic composition of pore water nitrate and total dissolved N (TDN) was measured in sediments of the St. Lawrence Estuary and the Gulf of St. Lawrence.
Lehmann, M. F., M. Alkhatib, P. A. del Giorgio, Alkhatib, M., del Giorgio, P. A., M. F. Lehmann, Arroyave Gómez, Diana Marcela   +6 more
core   +1 more source

Stable Isotopes Reveal the Drivers of Post‐Wildfire Natural Regeneration of Interior Douglas‐Fir Seedlings in British Columbia

Ecology and Evolution
Wildfires are increasing in frequency and severity due to climate change, posing challenges to forest ecosystems, including the southern interior of British Columbia, Canada. Interior Douglas‐fir (Pseudotsuga menziesii var.
Julie McAulay, José Ignacio Querejeta, Gabriel Danyagri, Bianca N. I. Eskelson, Timothy J. Philpott, Sari C. Saunders, Eliot Mompeán, Ignacio Barbeito   +7 more
doaj   +1 more source

Uptake Patterns of Glycine, Ammonium, and Nitrate Differ Among Four Common Tree Species of Northeast China

Frontiers in Plant Science, 2019
Fundamental questions of how plant species within secondary forests and plantations in northeast China partition limited nitrogen (N) resource remain unclear.
Feifei Zhu, Feifei Zhu, Luming Dai, Luming Dai, Erik A. Hobbie, Keisuke Koba, Xueyan Liu, Geshere A. Gurmesa, Shaonan Huang, Shaonan Huang, Shanlong Li, Shanlong Li, Yinghua Li, Shijie Han, Yunting Fang, Yunting Fang   +15 more
doaj   +1 more source

Nitrogen dynamics and nitrate stable isotopes indicate nitrogen loss in the Bay of Bengal [PDF]

Biogeosciences
Oxygen-minimum zones (OMZs) play an important role in the global oceanic nitrogen cycle because they account for 20 % to 40 % of the global loss of bioavailable nitrogen despite covering only about 1 % of the global ocean volume.
G. Schulz, G. Schulz, K. Dähnke, T. Sanders, J. Penopp, H. W. Bange, R. Czeschel, B. Gaye   +7 more
doaj   +1 more source

Seasonal changes of stable isotope signals in the primary feathers of plains sharp‐tailed grouse

Wildlife Society Bulletin, 2023
Stable isotopes of a consumer organism can be used to estimate the proportional utilization of food items that have different isotopic signals to estimate changes in diet over time.
Sejer D. Meyhoff, Daniel L. Johnson, Benjamin H. Ellert, Katelyn Lutes   +3 more
doaj   +1 more source

Conduits of contamination to contemporary food webs of the Norfolk Broads [PDF]

, 2011
PhDDuring the 1960s-1980s antifouling applications containing the organotin tributyltin (TBT) were applied to craft on the Norfolk Broads, leaving a legacy of contaminants in sediments.
Laws, Jacob
core  

The effectiveness of using carbonate isotope measurements of body tissues to infer diet in human evolution: Evidence from wild western chimpanzees (Pan troglodytes verus)* [PDF]

, 2015
Changes in diet throughout hominin evolution have been linked with important evolutionary changes. Stable carbon isotope analysis of inorganic apatite carbonate is the main isotopic method used to reconstruct fossil hominin diets; to test its ...
Boesch, Christophe, Richards, M. ; https://orcid.org/, Hublin, Jean-Jacques, Fahy, Geraldine, Fahy, G. ; https://orcid.org/, Richards, Michael P., Boesch, C. ; https://orcid.org/, Hublin, J. ; https://orcid.org/   +7 more
core   +1 more source

Nitrogen isotope ratio (δ15N): a nearly unexplored indicator that provides useful information in viticulture

OENO One
The study of the natural abundance of nitrogen-stable isotopes is an aspect of viticulture research that has received limited attention. While stable isotopes of carbon, oxygen and hydrogen have received significant attention, nitrogen isotope ratio ...
Luis Gonzaga Santesteban, Maite Loidi, Inés Urretavizcaya, Mónica Galar, Sara Crespo-Martínez, José Bernardo Royo, Carlos Miranda   +6 more
doaj   +1 more source

Do oxygen isotope values in collagen reflect the ecology and physiology of neotropical mammals?

Frontiers in Ecology and Evolution, 2015
Stable isotope data provide insight into the foraging ecology of animals. Traditionally, carbon and nitrogen isotope values have been used to infer dietary and habitat preferences.
Brooke eCrowley, Amanda Dawn Melin, Amanda Dawn Melin, Justin Douglas Yeakel, Justin Douglas Yeakel, Nathaniel Jay Dominy   +5 more
doaj   +1 more source