scholarly journals The role of standing dead Spartina alterniflora and benthic microalgae in salt marsh food webs:considerations based on multiple stable isotope analysis

1995 ◽  
Vol 121 ◽  
pp. 99-116 ◽  
Author(s):  
CA Currin ◽  
SY Newell ◽  
HW Paerl
Keyword(s):  
Salt Marsh ◽  
Stable Isotope ◽  
Spartina Alterniflora ◽  
Stable Isotope Analysis ◽  
Isotope Analysis ◽  
Benthic Microalgae ◽  
Standing Dead

scholarly journals Estimation of nutrient contributions from the ocean across a river basin using stable isotope analysis

2015 ◽  
Vol 12 (7) ◽  
pp. 5535-5557
Author(s):  
K. Nakayama ◽  
Y. Maruya ◽  
K. Matsumoto ◽  
M. Komata ◽  
K. Komai ◽  
...  
Keyword(s):  
Stable Isotope ◽  
River Basin ◽  
Stable Isotope Analysis ◽  
Chum Salmon ◽  
Ursus Arctos ◽  
Isotope Analysis ◽  
Oncorhynchus Gorbuscha ◽  
River Ecosystem ◽  
River Channels

Abstract. Since marine derived nutrients (MDN) are transported not only in river channels but also across the entire river basin, including via ground water and migratory animals, it is necessary to investigate the contribution of MDN to the forest floor (soils) in order to quantify the true role of MDN at the river ecosystem scale. This study investigated the contribution of pink (Oncorhynchus gorbuscha) and chum salmon (O. keta) to total oceanic nitrogen (TN) input across a river basin using stable isotope analysis (SIA) of nitrogen (δ15N). The contribution of TN entering the river basin by salmon was 23.8 % relative to the total amount of TN exported from the river basin, providing a first estimate of MDN export for a river basin. The contribution of nitrogen from the ocean to the river basin soils was between 22.9 and 23.8 %. Furthermore, SIA showed that the transport of oceanic TN by sea eagles (Haliaeetus spp.) was greater than that by bears (Ursus arctos), which had previously been that bears are thought to be the major animal transporter of nutrients in the northern part of Japan.

A perspective on the evolving role of stable isotope analysis and the emergence of cavity enhanced spectroscopy as a potent tool

2021 ◽  
Author(s):  
Sanchi Maithani ◽  
Abhijit Maity ◽  
Manik Pradhan
Keyword(s):  
Stable Isotopes ◽  
Stable Isotope ◽  
Stable Isotope Analysis ◽  
Isotopic Ratio ◽  
Isotope Analysis ◽  
Natural Environments ◽  
Geological Samples ◽  
Vast Array

The investigation of stable isotopes finds applications in a vast array of fields. The measurement of isotopic ratio in natural environments such as oceans, atmosphere and geological samples assists in...

Stable-isotope analysis: a neglected tool for placing parasites in food webs

2018 ◽  
Vol 93 (1) ◽  
pp. 1-7 ◽  
Author(s):  
A.J.M. Sabadel ◽  
A.D. Stumbo ◽  
C.D. MacLeod
Keyword(s):  
Stable Isotope ◽  
Food Webs ◽  
Stable Isotope Analysis ◽  
Isotope Analysis ◽  
Novel Approach ◽  
Isotope Studies ◽  
Food Web Theory ◽  
Ubiquitous Presence ◽  
Insight Into

AbstractParasites are often overlooked in the construction of food webs, despite their ubiquitous presence in almost every type of ecosystem. Researchers who do recognize their importance often struggle to include parasites using classical food-web theory, mainly due to the parasites' multiple hosts and life stages. A novel approach using compound-specific stable-isotope analysis promises to provide considerable insight into the energetic exchanges of parasite and host, which may solve some of the issues inherent in incorporating parasites using a classical approach. Understanding the role of parasites within food webs, and tracing the associated biomass transfers, are crucial to constructing new models that will expand our knowledge of food webs. This mini-review focuses on stable-isotope studies published in the past decade, and introduces compound-specific stable-isotope analysis as a powerful, but underutilized, newly developed tool that may answer many unresolved questions regarding the role of parasites in food webs.

Sign in / Sign up

Export Citation Format

Share Document