[OANNES Foro] MENSAJE

Mar Jul 21 09:34:13 PDT 2015

HAGAMOS ALGO POR SER EMEJOR PAIS EN LA INDUSTRIA PESQUERA QUE EL CANON PESQUERO SE  HAGA PROYECTS PESQUEROS  ON CADENA DE VALOR
TENEMOS QUE INSENTIVAR LA FORMACON DE MAS EMPRESAS EXPORTADORAS  INCREMENTEMOS LAS EXPORTACIONES

ATTE

EL PESQUERO

From: casal en infotex.com.pe
To: casal en infotex.com.pe
Date: Tue, 21 Jul 2015 11:23:47 -0500
Subject: [OANNES Foro] Implications of fishing rope strength on the severity	of large whale entanglements

*Lista Oannes, fundada el 11 de Octubre de 1996*

OANNES "SEÑOR DE LAS OLAS"
Foro Hispano Americano de Intercambio
de Información sobre Temas de Mar.
________________________________________

Visita nuestro canal de Youtube en:
https://www.youtube.com/Apkalluoannes

Puedes seguirnos en Twiter en:
https://twitter.com/ONGOannes

O también en Facebook en: https://www.facebook.com/ong.oannes
><> ><> ><> ><> ><> ><> ><> ><>

Conservation Biology

Accepted Article (Accepted, unedited articles published online and citable.
The final edited and typeset version of record will appear in future.)

DOI: 10.1111/cobi.12590

Implications of fishing rope strength on the severity of large whale
entanglements

Amy R. Knowlton1, Jooke Robbins2, Scott Landry2, Henry A. McKenna3, Scott D.
Kraus1 and Timothy Werner1,4

1New England Aquarium, Boston, MA, USA 2Center for Coastal Studies,
Provincetown, MA, USA 3Private consultant, Weston, MA, USA 4Department of
Biology, Boston University, Boston, MA, USA. Email: Amy R. Knowlton
(aknowlton en neaq.org)

Abstract

Entanglement in fixed fishing gear is a conservation concern for whales
worldwide, including in the United States where deaths of North Atlantic
right and humpback whales have exceeded management limits for decades. We
examined fishing gear removed from live and dead entangled whales along the
US East Coast and the Canadian Maritimes from 1994-2010 to investigate rope
polymer type, breaking strength, and diameter in relation to whale species,
age, and injury severity. For the 132 retrieved ropes from 70 cases, average
tested breaking strength was 2616 lbs (SD 1863; range 180-8910 lbs), which
is 26% lower than strength at manufacture (mean 3530 SD 2224; range
650-12000 lbs). Median rope diameter was 3/8 inch. Right and humpback whales
were found in ropes with significantly stronger breaking strengths at
manufacture than minke whales (4338 3850 and 2353 mean lbs, respectively).
Adult right whales were found in stronger ropes (mean 7664 lbs) than
juvenile right whales (mean 3446 lbs) and all humpback whale age classes
(mean 3906 lbs). For right whales, injuries have become more severe over the
past three decades, possibly due to changes in rope manufacturing in the mid
1990's that resulted in stronger ropes at the same diameter. Our results
suggest that broad adoption of ropes with breaking strengths of 1700 lbs or
less could reduce the number of life-threatening entanglements for large
whales by at least 72%, and still be strong enough to withstand the routine
forces involved in many fishing operations. A reduction of this magnitude
would achieve nearly all of the mitigation legally required for US stocks of
North Atlantic right and humpback whales. Reduced breaking strength ropes
should be developed and tested to determine the feasibility of its use in a
variety of fisheries.

---
This email is free from viruses and malware because avast! Antivirus protection is active.
https://www.avast.com/antivirus

Conservation Biology

Accepted Article (Accepted, unedited
articles published online and citable. The final edited and typeset version of
record will appear in future.)

DOI: 10.1111/cobi.12590

Implications of fishing rope strength on the severity of large
whale entanglements

Amy R.
Knowlton1, Jooke
Robbins2, Scott
Landry2, Henry
A. McKenna3, Scott
D. Kraus1 and Timothy
Werner1,4

1New England Aquarium, Boston, MA, USA 2Center for Coastal Studies, Provincetown, MA, USA 3Private consultant, Weston, MA, USA 4Department of Biology, Boston University, Boston,
MA, USA. Email: Amy
R. Knowlton (aknowlton en neaq.org)

Abstract

Entanglement
in fixed fishing gear is a conservation concern for whales worldwide, including
in the United States where deaths of North Atlantic right and humpback whales
have exceeded management limits for decades. We examined fishing gear removed
from live and dead entangled whales along the US East Coast and the Canadian
Maritimes from 1994–2010 to investigate rope polymer type, breaking
strength, and diameter in relation to whale species, age, and injury severity.
For the 132 retrieved ropes from 70 cases, average tested breaking strength was
2616 lbs (SD 1863; range 180–8910 lbs), which is 26% lower than strength
at manufacture (mean 3530 SD 2224; range 650-12000 lbs). Median rope diameter
was 3/8 inch. Right and humpback whales were found in ropes with significantly
stronger breaking strengths at manufacture than minke whales (4338 3850 and
2353 mean lbs, respectively). Adult right whales were found in stronger ropes
(mean 7664 lbs) than juvenile right whales (mean 3446 lbs) and all humpback
whale age classes (mean 3906 lbs). For right whales, injuries have become more
severe over the past three decades, possibly due to changes in rope
manufacturing in the mid 1990's that resulted in stronger ropes at the same
diameter. Our results suggest that broad adoption of ropes with breaking
strengths of 1700 lbs or less could reduce the number of life-threatening
entanglements for large whales by at least 72%, and still be strong enough to
withstand the routine forces involved in many fishing operations. A reduction
of this magnitude would achieve nearly all of the mitigation legally required
for US stocks of North Atlantic right and humpback whales. Reduced breaking
strength ropes should be developed and tested to determine the feasibility of
its use in a variety of fisheries.

				This email is free from viruses and malware because avast! Antivirus protection is active.

________________________________________

VISITA NUESTRO PORTAL WEB EN:
http://www.oannes.org.pe
PARA ENVIAR MENSAJES A LA LISTA USE:
oannes en lista.oannes.org.pe

LOS MENSAJES COMERCIALES ESTAN PROHIBIDOS
PARA SUBSCRIBIRSE O DESUBSCRIBIRSE SOLICITELO A:
oannes-owner en lista.oannes.org.pe
________________________________________

LOS MENSAJES Y ARTICULOS DIFUNDIDOS EN LA LISTA SON EXCLUSIVA RESPONSABILIDAD DE SUS AUTORES QUIENES ASUMEN TODA RESPONSABILIDAD FRENTE A TERCEROS POR CUALQUIER DA�O O PERJUICIO QUE EL CONTENIDO DE SUS COMENTARIOS PUEDA CAUSAR, INCLUYENDO RESPONSABILIDADES DE TIPO CIVIL, ADMINISTRATIVAS, PENALES O INFRACCIONES A DERECHOS DE AUTOR, MARCA O DE CUALQUIER NATURALEZA. LA ONG OANNES NO NECESARIAMENTE SE SOLIDARIZA CON LA INFORMACION DE LIBRE CIRCULACION EN "OANNES FORO", "OANNES BOLETIN", RESERVANDOSE EL DERECHO DE ELIMINAR LOS COMENTARIOS QUE SE CONSIDEREN FUERA DE LUGAR, DEL TEMA DE LA DISCUSION O DE LOS OBJETIVOS O PROPOSITOS DE ESTE FORO.

RECOMENDAMOS QUE INCLUYA SIEMPRE LA FUENTE Y LA FECHA EN CITAS QUE HACE DE PUBLICACIONES DE TERCEROS

IDENTIFIQUESE CORRECTAMENTE, NO USE SEUDONIMOS, FIRME SUS MENSAJES CON SU NOMBRE REAL

________________________________________
"Tu amigo no es el que te regala un pescado, sino el que te ense�a a criarlo y pescarlo con responsabilidad"

"It is not the person who gives you a fish who is your friend, but the one who teaches you fish-farming and fishing with responsibility"
______________________________________________ 		 	   		  
------------ próxima parte ------------
Se ha borrado un adjunto en formato HTML...
URL: <http://lista.oannes.org.pe/pipermail/oannes-oannes.org.pe/attachments/20150721/774798eb/attachment.html>