• Keine Ergebnisse gefunden

Ecosystem engineering in intertidal sand by lugworms as revealed by large-scale experimental exclusion: Results and perspectives

N/A
N/A
Info
Herunterladen
Protected

Academic year: 2022

Aktie "Ecosystem engineering in intertidal sand by lugworms as revealed by large-scale experimental exclusion: Results and perspectives "

Copied!
1
0
0

Wird geladen.... (Jetzt Volltext ansehen)

Jetzt herunterladen ( 1 Seite )

Volltext

(1)

Ecosystem engineering in intertidal sand by lugworms as revealed by large-scale experimental exclusion: Results and perspectives

Nils Volkenborn, Wadden Sea Station Sylt, Alfred Wegener Institute for Polar and Marine Research, nvolkenborn@awi-bremerhaven.de

Deposit-feeding lugworms (Arenicola marina) are widespread the dominant large burrowing macrofaunal species and consequently the major source of sediment reworking and

bioirrigation in intertidal sediments of the Wadden Sea. In 2002 an ongoing large-scale and long-term lugworm exclusion field experiment was started near the island of Sylt, Germany.

Exclusion was achieved by meshing the sediment in 10 cm depth on 6 exclusion plots, each with an area of 400m2. Effects of ‘ecosystem engineering’ by lugworms were found to extend beyond the vicinity of individual burrows with considerable implications for sediment

properties, biogeochemical proccesses, and the benthic community. This colloquium aims to synthesize the results of the first three years of the experiment and to open perspectives for further (collaborative) research.

Referenzen

Jetzt herunterladen ( PDF - 1 Seite - 10.46 KB )

ÄHNLICHE DOKUMENTE

The Thermal and Gravitational Energy Densities in the Large- scale Structure of the Universe

• This is the first quantitative assessment of the textbook statement on gravitational -> thermal energy conversion in the large-scale structure formation (using the

Evaluation of attacks and countermeasures in large scale networks

We present a simulation model which allows studies of worm spread and counter mea- sures in large scale multi-AS topologies with millions of IP addresses..

Agentcities: lessons and future perspectives for large-scale agent deployment

Steven Willmott is currently a Research Associate at the Artificial Intelligence sec- tion of the Departament de Llenguatges i Sistemes Informatics Universitat Politec- nica

Large river plumes and large-scale freshwater transport in the Eastern Arctic

The area of this freshened surface layer is much greater than the area of the freshened surface layer in the neighboring Kara Sea, while the total annual freshwater discharge to the

Relationship Between the Process of Large-scale Sediment Movement and Ground Vibration

So we analyzed the relationship, comparing ground vibration of high frequency range (higher than 1 Hz) to vibration of low frequency range (lower than 0.1 Hz) for the

A Study on Criteria of Warning and Evacuation for Large-scale Sediment Disasters Considering the Relationships with Sediment Movement and Damage

In Japan, Sediment Disaster Warning Information pertaining to a debris flow and slope failures due to rainfall is provided to residents based on the criteria

Experimental study on debris flow deposit dam formation and overflow process on large scale physical model

The debris flow simulation model used in Kanako is based on Takahashi model (Takahashi and Nakagawa, 1991). From the simulation results, debris flow deposit dam did not form

Fast large-scale optimization by unifying stochastic gradient and quasi-Newton methods

The quadratic term H t j is set by using the BFGS algorithm to generate an online approximation to the true Hessian of subfunction j based on its history of gradient evaluations