Defining and detecting undesirable disturbance in the context of marine eutrophication

Tett, Paul; Gowen, Richard J.; Mills, Dave; Fernandes, Teresa F.; Gilpin, Linda; Huxham, Mark; Kennington, Kevin; Read, Paul A.; Wilkinson, Martin; Malcolm, S.J.

doi:10.1016/j.marpolbul.2006.08.028

Cited by 135 publications

(110 citation statements)

References 58 publications

Supporting

Mentioning

109

Contrasting

Order By: Relevance

“…R3). The figure is a modification based on the work by Tett et al, 2007, van de Koppel et al, 2009, and Kemp et al, 2009 current systems in particular. Some of the key issues center on questions such as evolution of hypoxia and the responses of ecosystems.…”

Section: Key Questions and Topics For Future Researchmentioning

confidence: 99%

Natural and human-induced hypoxia and consequences for coastal areas: synthesis and future development

et al. 2010

View full text Add to dashboard Cite

Abstract. Hypoxia has become a world-wide phenomenon in the global coastal ocean and causes a deterioration of the structure and function of ecosystems. Based on the collective contributions of members of SCOR Working Group #128, the present study provides an overview of the major aspects of coastal hypoxia in different biogeochemical provinces, including estuaries, coastal waters, upwelling areas, fjords and semi-enclosed basins, with various external forcings, ecosysCorrespondence to: J. Zhang (jzhang@sklec.ecnu.edu.cn) tem responses, feedbacks and potential impact on the sustainability of the fishery and economics. The obvious external forcings include freshwater runoff and other factors contributing to stratification, organic matter and nutrient loadings, as well as exchange between coastal and open ocean water masses. Their different interactions set up mechanisms that drive the system towards hypoxia. Coastal systems also vary in their relative susceptibility to hypoxia depending on their physical and geographic settings. It is understood that coastal hypoxia has a profound impact on the sustainability of ecosystems, which can be seen, for example, by the change in the food-web structure and system function; other Published by Copernicus Publications on behalf of the European Geosciences Union. 1444 J. Zhang et al.: Natural and human-induced hypoxia and consequences for coastal areas influences include compression and loss of habitat, as well as changes in organism life cycles and reproduction. In most cases, the ecosystem responds to the low dissolved oxygen in non-linear ways with pronounced feedbacks to other compartments of the Earth System, including those that affect human society. Our knowledge and previous experiences illustrate that there is a need to develop new observational tools and models to support integrated research of biogeochemical dynamics and ecosystem behavior that will improve confidence in remediation management strategies for coastal hypoxia.

show abstract

Section: Key Questions and Topics For Future Researchmentioning

confidence: 99%

Natural and human-induced hypoxia and consequences for coastal areas: synthesis and future development

et al. 2010

View full text Add to dashboard Cite

show abstract

“…The net result will probably lead to a decreased abundance, richness and biomass of some biological taxa. Hence, as shown by and Tett et al (2007), an inherent hysteresis in the system may be unquantified (see Fig. 2), providing a new state for the Nervión estuary, whose designation was changed to a Highly Modified Water Body (i.e.…”

Section: <19mentioning

confidence: 99%

Medium- and Long-term Recovery of Estuarine and Coastal Ecosystems: Patterns, Rates and Restoration Effectiveness

Borja

Dauer

Elliott

et al. 2010

Estuaries and Coasts

360

175

View full text Add to dashboard Cite

Many estuarine and coastal marine ecosystems have increasingly experienced degradation caused by multiple stressors. Anthropogenic pressures alter natural ecosystems and the ecosystems are not considered to have recovered unless secondary succession has returned the ecosystem to the pre-existing condition or state. However, depending upon the scales of time, space and intensity of anthropogenic disturbance, return along the historic trajectory of the ecosystem may: (1) follow natural restoration though secondary succession; (2) be re-directed through ecological restoration, or (3) be unattainable. In order to address the gaps in knowledge about restoration and recovery of estuarine and coastal ecosystems, this special feature includes the present overview and other contributions to provide a synthesis of our knowledge about recovery patterns, rates and restoration effectiveness. From the 51 examples collated in this contribution, we refine the recovery from the list of stressors into six recovery mechanisms: (1) recovery from sediment modification, which includes all aspects of dredging and disposal; (2) recovery by complete removal of stressors limiting natural ecosystem processes, which includes tidal marsh and inundation restoration; (3) recovery by speed of organic degradation, which includes oil discharge, fish farm wastes, sewage disposal, and paper mill waste; (4) recovery from persistent pollutants, which includes chemical discharges, such as TBT; (5) recovery from excessive biological removal, related to fisheries and (6) recovery from hydrological and morphological modification. Drawing upon experience both from these many examples and from an example of one comprehensive study, we show that although in some cases recovery can take <5 years, especially for the short-lived and high-turnover biological components, full recovery of coastal marine and estuarine ecosystems from over a century of degradation can take a minimum of 15-25 years for attainment of the original biotic composition and diversity may lag far beyond that period.

show abstract

“…Certainly, the key challenge for science is to provide an adequate understanding of the structure and functioning of the marine environment so that future pressures such as anthropogenic climate change and changes in human activities can be put into context. This requires the development of methods to describe the structure and functioning of ecosystems and mechanisms to predict and minimise the impacts of human activities to avoid undesirable disturbances (Tett et al 2007). Approaches to all future ecosystem studies will need to focus on key linkages between ecosystem compartments (Fig.…”

Section: Key Challengesmentioning

confidence: 99%

“…2) representing different hydrodynamicseabed types (also referred to as ecohydrodynamic types) likely to affect the biogeochemical cycling of carbon and nutrients in each region (see Tett et al 2007). In situ semi-autonomous instruments were deployed at each site to obtain continuous highfrequency measurements of key biogeochemical parameters such as temperature, chlorophyll fluorescence, optical backscatter, photosynthetically active radiation, inorganic and organic dissolved nutrients, and dissolved oxygen over annual cycles (see Greenwood et al 2010;Capuzzo et al 2012;Johnson et al 2012).…”

mentioning

confidence: 99%

Marine Ecosystem Connections: essential indicators of healthy, productive and biologically diverse seas

Painting

Forster

2013

Biogeochemistry

View full text Add to dashboard Cite

Defining and detecting undesirable disturbance in the context of marine eutrophication

Cited by 135 publications

References 58 publications

Natural and human-induced hypoxia and consequences for coastal areas: synthesis and future development

Natural and human-induced hypoxia and consequences for coastal areas: synthesis and future development

Medium- and Long-term Recovery of Estuarine and Coastal Ecosystems: Patterns, Rates and Restoration Effectiveness

Marine Ecosystem Connections: essential indicators of healthy, productive and biologically diverse seas

Contact Info

Product

Resources

About