NDLI: Recovery of Danish Coastal Ecosystems After Reductions in Nutrient Loading: A Holistic Ecosystem Approach

Content Provider	Springer Nature Link
Author	Riemann, Bo Carstensen, Jacob Dahl, Karsten Fossing, Henrik Hansen, Jens W. Jakobsen, Hans H. Josefson, Alf B. Krause Jensen, Dorte Markager, Stiig Stæhr, Peter A. Timmermann, Karen Windolf, Jørgen Andersen, Jesper H.
Copyright Year	2015
Abstract	In the 1980s, Danish coastal waters suffered from eutrophication and several nutrient management plans have been implemented during the years to improve ecological status. This study aims at giving a holistic ecosystem perspective on 25 years of mitigation measures. We report trends of nutrient inputs and the responses to these in various chemical and biological components. Nutrient inputs from land were reduced by ~50 % for nitrogen (N) and 56 % for phosphorus (P) since 1990. These reductions resulted in significant and parallel declines in nutrient concentrations, and initiated a shift in the dominance of primary producers towards reduced phytoplankton biomass (chlorophyll a concentration) and increased cover of macroalgae in deeper waters. In the last 5 years, eelgrass meadows have also expanded towards deeper waters, in response to improving water clarity. An expected improvement of bottom water oxygen conditions has not been observed, presumably because more frequent stratification and higher water temperatures have counteracted the expected positive effects of reduced nutrient inputs. The biomass of the benthic macrofauna decreased as expected, but it was composed of a drastic decline of filter feeders paralleled by a more moderate increase of deposit feeders. This shift was most likely induced by increasing stratification. The reduced benthic filtration along with the limited eelgrass cover probably kept relatively more particles in suspension, which can explain why improvements in the Secchi depths were modest. Overall, several ecosystem components demonstrated clear signs of improvement, suggesting that at least partial recovery is attainable. On this basis, we propose a conceptual scheme for recovery of shallow coastal ecosystems following marked reductions in nutrient inputs.
Starting Page	82
Ending Page	97
Page Count	16
File Format	PDF
ISSN	15592723
Journal	Estuaries
Volume Number	39
Issue Number	1
e-ISSN	15592731
Language	English
Publisher	Springer US
Publisher Date	2015-05-09
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Benthic macrofauna Eelgrass Macroalgae Nutrients Oligotrophication Recovery Water quality Environment Ecology Freshwater & Marine Ecology Environmental Management Coastal Sciences Water and Health
Content Type	Text
Resource Type	Article
Subject	Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Recovery of Danish Coastal Ecosystems After Reductions in Nutrient Loading: A Holistic Ecosystem Approach

Benthic and Pelagic Primary Production in Different Nutrient Regimes

Coastal Hypoxia and the Importance of Benthic Macrofauna Communities for Ecosystem Functioning

Reduced Cover of Drifting Macroalgae Following Nutrient Reduction in Danish Coastal Waters

Regional-Scale Differences in Eutrophication Effects on Eelgrass-Associated (Zostera marina) Macrofauna

Decadal Changes in Water Quality and Net Productivity of a Shallow Danish Estuary Following Significant Nutrient Reductions

Water clarity and eelgrass responses to nitrogen reductions in the eutrophic Skive Fjord, Denmark

Limited Consequences of Seagrass Decline on Benthic Macrofauna and Associated Biotic Indicators

Oligotrophication from wetland epuration alters the riverine trophic network and carrying capacity for fish

Recovery of Danish Coastal Ecosystems After Reductions in Nutrient Loading: A Holistic Ecosystem Approach

Similar Documents

Recovery of Danish Coastal Ecosystems After Reductions in Nutrient Loading: A Holistic Ecosystem Approach

Benthic and Pelagic Primary Production in Different Nutrient Regimes

Coastal Hypoxia and the Importance of Benthic Macrofauna Communities for Ecosystem Functioning

Reduced Cover of Drifting Macroalgae Following Nutrient Reduction in Danish Coastal Waters

Regional-Scale Differences in Eutrophication Effects on Eelgrass-Associated (Zostera marina) Macrofauna

Decadal Changes in Water Quality and Net Productivity of a Shallow Danish Estuary Following Significant Nutrient Reductions

Water clarity and eelgrass responses to nitrogen reductions in the eutrophic Skive Fjord, Denmark

Limited Consequences of Seagrass Decline on Benthic Macrofauna and Associated Biotic Indicators

Oligotrophication from wetland epuration alters the riverine trophic network and carrying capacity for fish

Recovery of Danish Coastal Ecosystems After Reductions in Nutrient Loading: A Holistic Ecosystem Approach