biodiversity and fisheries management
Download
Skip this Video
Download Presentation
Biodiversity and Fisheries Management

Loading in 2 Seconds...

play fullscreen
1 / 24

Biodiversity and Fisheries Management - PowerPoint PPT Presentation


  • 126 Views
  • Uploaded on

Biodiversity and Fisheries Management. Daniel Pauly Fisheries Centre, University of British Columbia Vancouver, Canada United Nations Fisheries Training Programme Marine Research Institure, December 17, 2002, Reykjavik, Iceland.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Biodiversity and Fisheries Management ' - silver


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
biodiversity and fisheries management

Biodiversity and Fisheries Management

Daniel Pauly

Fisheries Centre,

University of British Columbia

Vancouver, Canada

United Nations Fisheries Training Programme

Marine Research Institure,

December 17, 2002, Reykjavik, Iceland

slide2

Frankly it is not obvious how ‘biodiversity’ can be included into fisheries management, even if the latter becomes ecosystem-based. However:

  • Most of the world’s countries have signed on the Convention on Biological Diversity, and similar agreements and treaties, and these require considering biodiversity when managing fisheries; and
  • Even without this formal reason, we should in any case attempt not to lose species and other genetic resources.
slide4

Through this presentation, I will therefore suggest one approach that can be used to assess biodiversity in an ecosystem context, assuming that this can thus inform fisheries management. The steps are:

  • Construct, using the Ecopath software, a food web model of the ecosystem of interest, and including functional groups representing all of the system in question;
  • Identify/list the species included in each functional group;
  • Incorporate the status (IUCN Red List, CITES, etc.) of these species as constraint into policy explorations conducted with Ecosim (e.g. via ‘Mandated Rebuilding’ or Ecospace (e.g. via Marine Protected Areas);
  • Formulate policies that account both for fisheries benefits and for maintenance of biodiversity.
we have discussed previously how to construct an ecopath model and need not return to this here
We have discussed previously how to construct an Ecopath model, and need not return to this here….
the next items is the area covered by the model let s assume it is a large marine ecosystem lme
The next items is the area covered by the model. Let’s assume it is a Large Marine Ecosystem (LME)…
for many of these fishes we will have access to parameters relevant to model building e g on growth
For many of these fishes, we will have access to parameters relevant to model building, e.g. on growth.
and on diet composition i e trophic levels as also needed for analyses of fishing down
…and on diet composition, i.e., trophic levels (as also needed for analyses of ‘fishing down.’
indeed these trophic level estimates allow us to construct simple pyramid models of ecosystems
Indeed, these trophic level estimates allow us to construct simple ‘pyramid’ models of ecosystems.
slide12
Once the fishes are covered, we can move on to other groups, e.g., the cephalopods (squids, cuttlefishes, etc.).
the trick being to interface maps of their distribution with lme and eez maps
…the trick being to interface maps of their distribution with LME and EEZ maps.

Octopus globosus

this biodiversity is what support fisheries landings which must be re expressed on a per area basis
This biodiversity is what support fisheries landings, which must be re-expressed on a per- area basis…
slide23
We intend to replicate the work presented here at LME level at the finer level of countries EEZ. This should allow for:
  • A finer resolution, for both biodiversity lists, and for Ecopath models, which will lead to countries being better able to document their marine biodiversity;
  • A better understanding to be achieved regarding the relationships between biomass fluxes and the biodiversity they support.
there is obviously more to incorporating biodiversity into fisheries management
There is obviously more to incorporating biodiversity into fisheries management….

But what I have shown should keep up busy for a while.

Thank you.

ad