Results 21 to 30 of about 95,822 (213)

Dual stable isotope abundances unravel trophic position of estuarine nematodes [PDF]

, 2005
The role and quantitative importance of free-living nematodes in marine and estuarine soft sediments remain enigmatic for lack of empirical evidence on the feeding habits and trophic position of most nematode species.
BOUILLON, S, GALLUCCI, F, Moens, Tom
core   +1 more source

Effect of dietary stable isotopic ratios of carbon and nitrogen on the extent of their incorporation into tissues of rats

Journal of Animal Science and Biotechnology, 2012
This study was conducted to investigate the effect of different dietary ratios of 13 C to 12 C or 15 N to 14 N on their relative incorporation into tissues.
Lv Wentao, Ju Tingting, Dong Bing, Yu Boyang, Yin Jingdong   +4 more
doaj   +1 more source

Amino Acid δ15N Can Detect Diet Effects on Pollution Risks for Yellow-Legged Gulls Overlooked by Trophic Position

Frontiers in Marine Science, 2021
The use of top-consumers as bioindicators of the health of food webs is hampered by uncertainties in their effective use of resources. In this study, the abundance of stable nitrogen isotopes in amino acids from homogenised eggs of the Yellow-legged Gull
Antonio Bode, Victoria Besada, Begoña Pérez-Fernández, Lucía Viñas   +3 more
doaj   +1 more source

Life-history traits of the giant squid Architeuthis dux revealed from stable isotope signatures recorded in beaks [PDF]

, 2010
Peer ...
Alejandro B. Rodríguez-Navarro, Bode, Boyle, Cabana, Cherel, Cherel, Cherel, Cherel, Cherel, Chris S. Romanek, Clarke, Deagle, DeNiro, DeNiro, Field, González, Graham J. Pierce, Grist, Guerra, Guerra, Guerra, Hernández-López, Higgins, Hobson, Hobson, Hobson, Hunt, Jackson, McCutchan, Mendes, Miserez, Nixon, Parry, Pedro Álvarez-Lloret, Perales-Raya, Rau, Raya, Rodhouse, Roper, Ruiz-Cooley, Ruiz-Cooley, Schimmelmann, Seibel, Smith, Stowasser, Takai, Vanderklift, Webb, Zuur, Ángel F. González, Ángel Guerra   +50 more
core   +1 more source

Seasonal changes in the δ13C and δ15N signatures of the Lago Maggiore pelagic food web

Journal of Limnology, 2011
Seasonal variation in the relative contributions of littoral and pelagic food sources to the diets of open-water zooplankton and subsequent changes in their trophic positions were investigated with carbon and nitrogen Stable Isotope Analysis (SIA).
Marina MANCA, Anna VISCONTI
doaj   +1 more source

Comparative Study of Nitrogen Cycling Between a Bay With Riverine Input and a Bay Without Riverine Input, Inferred From Stable Isotopes

Frontiers in Marine Science, 2022
The eutrophication degree in the coastal bay has been increasing significantly for the past years, due to the increasing nutrient discharge. However, the factors controlling sources and nitrogen (N) cycling in the different types of bays are still poorly
Chunqing Chen, Qibin Lao, Qibin Lao, Youli Shen, Guangzhe Jin, Guangzhe Jin, Guangzhe Jin, Fajin Chen, Fajin Chen, Fajin Chen, Qizhong Su, Xuetie Lei, Xin Zhou, Xuan Lu, Qingmei Zhu, Qingmei Zhu, Qingmei Zhu, Guoqiang Liu, Guoqiang Liu   +18 more
doaj   +1 more source

Stable isotope analysis provides new information on winter habitat use of declining avian migrants that is relevant to their conservation [PDF]

, 2012
Winter habitat use and the magnitude of migratory connectivity are important parameters when assessing drivers of the marked declines in avian migrants. Such information is unavailable for most species.
BJM Stutchbury, BN Smith, C Eraud, C Fry, CM Perrins, CP Chamberlain, D Lack, D Norman, DI Pearson, DJ Pain, DS Wilcove, E Yohannes, FJ Sanderson, G Gory, GD Farquhar, GJ Morel, I Burfield, I Newton, JA Grey, Jason Newton, JC Sealy, JC Vogel, JF Kelly, JM Neto, John W. Mallord, JR Ehleringer, K Risely, KA Hobson, Karl L. Evans, KL Evans, L Jenni, L Svensson, L Zwarts, LA Hill, M Cardillo, M Schaub, MB Hernquist, MJA Werger, MS Webster, N Cooper, N Saino, Ofer Ovadia, P Chantler, P Marra, RA Robinson, RF Inger, RP Ellis, S Bearhop, S Bensch, S Oppel, S Shultz, SD Newsome, SH Ambrose, Shai Markman, T Szép, T Szép, TB Coplen, TB Oatley, TS Reichlin, WJ Peach   +59 more
core   +4 more sources

The fate of nitrogen in the Zarin-Gol River receiving trout farm effluent

Scientific Reports, 2023
This study investigated the Zarrin-Gol River ecosystem in Iran to trace organic matter in the food web and evaluate the impact of aquaculture farm effluent using stable isotopes of nitrogen (δ15N) and carbon (δ13C).
Altin Ghojoghi, Rasoul Ghorbani, Rahman Patimar, Abdolrassoul Salmanmahiny, Rahmat Naddafi, Abdolazim Fazel, Timothy D. Jardine   +6 more
doaj   +1 more source

Tree growth acceleration and expansion of alpine forests: The synergistic effect of atmospheric and edaphic change. [PDF]

, 2016
Many forest ecosystems have experienced recent declines in productivity; however, in some alpine regions, tree growth and forest expansion are increasing at marked rates.
Horwath, William R, Liang, Qianlong, Silva, Lucas CR, Sun, Geng, Wu, Ning, Zhu-Barker, Xia   +5 more
core   +2 more sources

Determining trophic niche width: a novel approach using stable isotope analysis [PDF]

, 2004
1. Although conceptually robust, it has proven difficult to find practical measures of niche width that are simple to obtain, yet provide an adequate descriptor of the ecological position of the population examined. 2.
Adams, C.E., Bearhop, S., Fuller, R.A., Macleod, H., Waldron, S.   +4 more
core   +1 more source