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Ecological impacts of cockle fishing in Poole Harbour, UK. Investigating the ecological impact of a new cockle fishing method (mechanical dredging) on the infaunal benthic community of eastern Poole Harbour

Формат:      Страниц 72
     мягкая обложка
Автор:
Daniel S.    
Издательство:
Книга по Требованию    
Год:2009
Цена:
1997 руб
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This has the potential to impact on oystercatchers (Haemotapus ostralegus), which are in direct competition with fishermen for adult cockles. Similar changes in community structure of both sites suggested eastern Poole Harbour may have experienced anthropogenic disturbance in addition to cockle dredging. Poole Harbour (UK), one of the world's largest natural harbours, supports terrestrial and marine habitats that are protected under National, European and International designations. This research investigated ecological impacts of cockle dredging on infaunal communities, using statistical analysis to look at community change in fished and non-fished sites over a 2 year period. Results suggested increased fishing activity led to the removal of adult cockles and a reduction in cockle settlement and recruitment, reducing the adult population for the following year. Recent introduction of mechanical dredging in the cockle (Cerastoderma edule) fishery raised concerns among conservation groups that this new method may have a damaging effect on infaunal benthic communities that form critical food resources for shorebirds.
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Гражданская война в США
I made hem feel like a Ge eral. "Spearheader's memories" - Harry Hai es Draugh - checker - "поток воздуха". Во время войны приобрело значение "стукач, доносчик". Очевидно, проводилась аналогия между потоком воздуха, приносящим сведения от одной воюющей стороны к другой. Однако есть и уточнение, приведенная из словаря использования английского языка30: слово draugh трактуется как "a draugh (curre of air) from a ill-fi i g wi dow", т.е. "сквозняк, идущий из неплотно закрытого окна". Эта трактовка еще больше подходит к тому значению слова draugh , которое оно приобрело во время войны. Draw your furrow s raigh er - ell he ru h - "Веди борозду прямее". В переносном смысле значило: "Говори правду". В связи с тем, что немалую часть войск Севера составляли фермеры, а Юга - плантаторы, становится понятна именно такая аналогия, связанная с землевладением. Flicker - coward - трус, робкий человек. Образовано от глагола o flicker (дрожать, мерцать) путем перехода глагола в имя существительное. Fresh fish - raw recrui s - "свежая рыба". Так "ветераны" называли рекрутов-новичков, которые еще не прошли испытаний боями.


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