Integrating the provision of ecosystem services and trawl fisheries for the management of the marine environment.

The species interaction and their biological traits (BT) determine the function of benthic communities and, hence, the delivery of ecosystem services. Therefore, disturbance of benthic communities by trawling may compromise ecosystem service delivery, including fisheries' catches. In this work, we explore 1) the impact of trawling activities on benthic functional components (after the BTA approach) and 2) how trawling impact may affect the ecosystem services delivered by benthic communities. To this aim, we assessed the provision of ecosystem services by adopting the concept of Ecosystem Service Providers (ESP), i.e. ecological units that perform ecosystem functions that will ultimately deliver ecosystem services. We studied thirteen sites subjected to different levels of fishing effort in the Mediterranean. From a range of environmental variables included in the study, we found ESPs to be mainly affected by fishing effort and grain size. Our results suggested that habitat type has significant effects on the distribution of ESPs and this natural variability influences ESP response to trawling at a specific site. In order to summarize the complex relationships between human uses, ecosystem components and the demand for ecosystem services in trawling grounds, we adapted a DPSIR (Drivers-Pressures-State Change-Impact-Response) framework to the study area, emphasizing the role of society as Drivers of change and actors demanding management Responses. This integrative framework aims to inform managers about the interactions between all the elements involved in the management of trawling grounds, highlighting the need for an integrated approach in order to ensure ecosystem service provision.

[1]  G. Daily,et al.  Ecosystem Services in Decision Making: Time to Deliver , 2009 .

[2]  LucchettiAlessandro,et al.  Impact and performance of Mediterranean fishing gear by side-scan sonar technology , 2012 .

[3]  Raymond N. Gorley,et al.  PERMANOVA+ for PRIMER. Guide to software and statistical methods , 2008 .

[4]  Stephen C. Mangi,et al.  Reef fisheries management in Kenya: Preliminary approach using the driver–pressure–state–impacts–response (DPSIR) scheme of indicators , 2007 .

[5]  E. V. van Ierland,et al.  Identification, definition and quantification of goods and services provided by marine biodiversity: implications for the ecosystem approach. , 2007, Marine pollution bulletin.

[6]  Stuart I. Rogers,et al.  Assessing Marine Ecosystem Health: The Long-Term Effects of Fishing on Functional Biodiversity in North Sea Benthos , 2003 .

[7]  A. Karageorgis,et al.  Respiration and sequestering of organic carbon in shelf sediments of the oligotrophic northern Aegean Sea , 2004 .

[8]  Chris Frid,et al.  Temporal variability in the benthos: Does the sea floor function differently over time? , 2011 .

[9]  P. Snelgrove,et al.  Real world biodiversity-ecosystem functioning: a seafloor perspective. , 2014, Trends in ecology & evolution.

[10]  S. Wood,et al.  GAMs with integrated model selection using penalized regression splines and applications to environmental modelling , 2002 .

[11]  B. Statzner,et al.  Biomonitoring through biological traits of benthic macroinvertebrates : perspectives for a general tool in stream management , 1998 .

[12]  Julie Bremner,et al.  Species' traits and ecological functioning in marine conservation and management , 2008 .

[13]  S. Jennings,et al.  Trawling disturbance can modify benthic production processes , 2001 .

[14]  S. Thrush,et al.  Simplifying the complex: an 'Ecosystem Principles Approach' to goods and services management in marine coastal ecosystems , 2011 .

[15]  K. Bjorndal,et al.  Historical Overfishing and the Recent Collapse of Coastal Ecosystems , 2001, Science.

[16]  Naeem,et al.  Ecosystems and Human Well-Being: Biodiversity Synthesis , 2005 .

[17]  R. Rosenberg,et al.  Importance of functional biodiversity and species-specific traits of benthic fauna for ecosystem functions in marine sediment , 2007 .

[18]  S. Thrush,et al.  Disturbance to Marine Benthic Habitats by Trawling and Dredging: Implications for Marine Biodiversity , 2002 .

[19]  R. Ostfeld,et al.  A call to ecologists: measuring, analyzing, and managing ecosystem services , 2005 .

[20]  W. Schrank,et al.  The continued decline in the world catch of marine fish , 2014 .

[21]  C. Frid,et al.  Trawling disturbance on benthic ecosystems and consequences on commercial species: a northwestern Mediterranean case study , 2014 .

[22]  S. Levin,et al.  Resilience, Robustness, and Marine Ecosystem-based Management , 2008 .

[23]  A. Robertson.  The relationship between annual production: Biomass ratios and lifespans for marine macrobenthos , 2004, Oecologia.

[24]  P. Snelgrove,et al.  The Importance of marine sediment biodiversity in ecosystem processes , 1997 .

[25]  Paloma Martín,et al.  Population structure and exploitation of Bolinus brandaris (Mollusca: Gastropoda) off the Catalan coast (northwestern Mediterranean) , 1995 .

[26]  P. Sartor,et al.  Seasonal closures as a measure of trawling effort control in two Mediterranean trawling grounds: effects on epibenthic communities. , 2008, Marine pollution bulletin.

[27]  S. Thrush,et al.  What can ecology contribute to ecosystem-based management? , 2010, Annual review of marine science.

[28]  F. Maltagliati,et al.  Ecosystem service provision: an operational way for marine biodiversity conservation and management. , 2010, Marine pollution bulletin.

[29]  Michel J. Kaiser,et al.  Chronic bottom trawling alters the functional composition of benthic invertebrate communities on a sea-basin scale , 2006 .

[30]  C. Lo Iacono,et al.  Benthic habitat characterisation of soft-bottom continental shelves: Integration of acoustic surveys, benthic samples and trawling disturbance intensity , 2013 .

[31]  F. Ordines,et al.  Biodiversity and habitat mapping of Menorca Channel (western Mediterranean): implications for conservation , 2012, Biodiversity and Conservation.

[32]  M. Attrill,et al.  Incorporating indirect ecosystem services into marine protected area planning and management , 2012 .

[33]  S. Thrush,et al.  Functional changes as indicators of trawling disturbance on a benthic community located in a fishing ground (NW Mediterranean Sea) , 2007 .

[34]  F. Sardá.  Symptoms of overexploitation in the stock of the Norway lobster ( Nephrops norvegicus ) on the "Serola Bank" (western Mediterranean Sea off Barcelona) , 1998 .

[35]  S. Bolam,et al.  Macrofaunal production and biological traits: Spatial relationships along the UK continental shelf , 2014 .

[36]  J. Boyd,et al.  What are Ecosystem Services? The Need for Standardized Environmental Accounting Units , 2006 .

[37]  M. Elliott,et al.  Management of the marine environment: integrating ecosystem services and societal benefits with the DPSIR framework in a systems approach. , 2011, Marine pollution bulletin.

[38]  S. Rogers,et al.  Matching biological traits to environmental conditions in marine benthic ecosystems , 2006 .

[39]  Yi Wang,et al.  mvabund– an R package for model‐based analysis of multivariate abundance data , 2012 .

[40]  S. Thrush,et al.  Bioturbators enhance ecosystem function through complex biogeochemical interactions , 2004, Nature.