A PHP Error was encountered

Severity: Warning

Message: file_get_contents(https://...@pubfacts.com&api_key=b8daa3ad693db53b1410957c26c9a51b4908&a=1): Failed to open stream: HTTP request failed! HTTP/1.1 429 Too Many Requests

Filename: helpers/my_audit_helper.php

Line Number: 176

Backtrace:

File: /var/www/html/application/helpers/my_audit_helper.php
Line: 176
Function: file_get_contents

File: /var/www/html/application/helpers/my_audit_helper.php
Line: 250
Function: simplexml_load_file_from_url

File: /var/www/html/application/helpers/my_audit_helper.php
Line: 3122
Function: getPubMedXML

File: /var/www/html/application/controllers/Detail.php
Line: 575
Function: pubMedSearch_Global

File: /var/www/html/application/controllers/Detail.php
Line: 489
Function: pubMedGetRelatedKeyword

File: /var/www/html/index.php
Line: 316
Function: require_once

Salmon and alder as nitrogen sources to riparian forests in a boreal Alaskan watershed. | LitMetric

Salmon and alder as nitrogen sources to riparian forests in a boreal Alaskan watershed.

Oecologia

School of Aquatic and Fishery Sciences, University of Washington, Box 355020, Seattle, WA, 98195, USA.

Published: December 2002

Anadromous Pacific salmon (Oncorhynchus spp.) transport marine-derived nitrogen (MDN) to the rivers in which they spawn. Isotopic analyses of riparian vegetation in a boreal Alaskan watershed indicate that trees and shrubs near spawning streams derive ~24-26% of their foliar nitrogen (N) from salmon. Basal area growth of white spruce (Picea glauca) is enhanced at sites receiving MDN inputs. This marine N subsidy appears to be less important to riparian ecosystems where symbiotic N fixation by alder (Alnus crispa) is prevalent, although salmon carcasses may nonetheless be an important source of other marine-derived nutrients affecting productivity in these forests. These findings illustrate the complexity of interactions surrounding riparian forests and the interconnectedness of river and riparian ecosystems.

Download full-text PDF

Source
http://dx.doi.org/10.1007/s00442-002-1070-xDOI Listing

Publication Analysis

Top Keywords

riparian forests
8
boreal alaskan
8
alaskan watershed
8
riparian ecosystems
8
riparian
5
salmon
4
salmon alder
4
alder nitrogen
4
nitrogen sources
4
sources riparian
4

Similar Publications

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!