Diurnal variation of water chemistry and zooplankton in Little Mere, cheshire, UK,in 1993 and 1994

MOOS, Brian; BEKLİOĞLU, Meryem

Diurnal variation of water chemistry and zooplankton in Little Mere, cheshire, UK,in 1993 and 1994

Meryem BEKLİOĞLU, (Orta Doğu Teknik Üniversitesi, Biyoloji Bölümü, Ankara)

Brian MOOS (Girilmedi)

Turkish Journal of Zoology

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Yıl: 1999 Cilt: 23 Sayı: 4 Sayfa Aralığı: 337 - 348 Metin Dili: Diğer İndeks Tarihi: 29-07-2022

Diurnal variation of water chemistry and zooplankton in Little Mere, cheshire, UK,in 1993 and 1994

Öz:

1993 yılında. Little Mere'de yapılan, üç farklı habitattaki zooplankton günlük örneklemesi, Timms ve Moss'un (10) Cladocera'ların gece sığınak olarak kullandıkları makrofitlerin yoğun bulunduğu habitatlardan açık suya çıkarak fitoplankton üzerinden beslendikleri temeline dayanan 'sığınak hipotez'ni desteklememektedir. Yüzen yapraklı su nilüferinin D. hyalina'ya planktivor balık avlama baskısına karşı barınak sağlamada sualtı bitkisi olan Potamogeton berchtoldii ye göre daha etkin olduğu bulğulanmıştır. Bu durum su nilüferinin yoğun olarak bulunduğu ortamlarda yarattığı fiziksel ve kimyasal değişmeler sonucu balık beslenmesini olumsuz olarak etkilemişi ile ilgili olabilir. Su nilüferinin yoğun bulunduğu ortamlarda balık beslenmesinin olumsuz etkilenmesi. 1994 yılında yapılan günlük örneklemede gözlenen çok düşük pH ve çözünmüş oksijen ile desteklenmektedir. P. berchtoldiînin su bitkilerine bağlı yaşayan zooplakton gruplarına (Eurycercus. Sida, Simocephalus vb.) barınak sağlamada pelajik Cladocera'lara göre daha etkin olduğu bulğulanmıştır. Bu durum planktivor balık beslenmesinin sualtı bitkilerinin bulunduğu ortamdan olumsuz etkilenmemesi ile açıklanabilir. Bu çalışmanın bulguları, ötrofikasyonu kontrol etmek için uygulanan biyomanipulasyon tekniğinin daha etkin olarak kullanılabilmesinde, sualtı makrofitlerin pelajik Cladocera'lara planktivor balık avlanma baskısına karşı barınak sağlamadaki rolünün daha iyi anlaşılmasının önemini vurgulamaktadır.

Anahtar Kelime:

Konular: Biyoloji

Little mere (Cheshire,İngiltere) su kimyası ve zooplankton topluluklarının 1993 ve 1994 yıllarında günlük değişimi

Öz:

In Little Mere, diurnal sampling of the zooplankton at three different habitats in 1993 provided little evidence to support the data of Timms and Moss (10) that cladocerans move out from refugia at night to graze in open water. The floating-leaved water lily, appeared to be more efficient at providing refuge to D. hyalina in the presence of high pianktivore fish predation than the submerged plant beds and the open water. This might be due to unfavourable physical and chemical environmental conditions associated with the water lily bed for fish feeding, a possibility supported by the findings of very low dissolved oxygen and pH values in the water lily beds. Potamogeton berchtoldii beds appeared to be more favourable habitats for submerged plant associated zooplankters than for open water grazers, probably due to the high predation pressure of planktivorous fish on the latter. The findings of this study suggest that it is important to have a better understanding of effectivness of submerged plants at provison of refuges for open water Cladocera against fish predation to combat eutrophication by using biomanipulation.

Anahtar Kelime: Diaphania hyalinata habitats freshwater ecology zooplankton floating plants Potamogeton berchtoldii feeding habits fishes diurnal variation aquatic plants

Konular: Biyoloji

Belge Türü: Makale Makale Türü: Araştırma Makalesi Erişim Türü: Erişime Açık

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APA	BEKLİOĞLU M, MOOS B (1999). Diurnal variation of water chemistry and zooplankton in Little Mere, cheshire, UK,in 1993 and 1994. , 337 - 348.
Chicago	BEKLİOĞLU Meryem,MOOS Brian Diurnal variation of water chemistry and zooplankton in Little Mere, cheshire, UK,in 1993 and 1994. (1999): 337 - 348.
MLA	BEKLİOĞLU Meryem,MOOS Brian Diurnal variation of water chemistry and zooplankton in Little Mere, cheshire, UK,in 1993 and 1994. , 1999, ss.337 - 348.
AMA	BEKLİOĞLU M,MOOS B Diurnal variation of water chemistry and zooplankton in Little Mere, cheshire, UK,in 1993 and 1994. . 1999; 337 - 348.
Vancouver	BEKLİOĞLU M,MOOS B Diurnal variation of water chemistry and zooplankton in Little Mere, cheshire, UK,in 1993 and 1994. . 1999; 337 - 348.
IEEE	BEKLİOĞLU M,MOOS B "Diurnal variation of water chemistry and zooplankton in Little Mere, cheshire, UK,in 1993 and 1994." , ss.337 - 348, 1999.
ISNAD	BEKLİOĞLU, Meryem - MOOS, Brian. "Diurnal variation of water chemistry and zooplankton in Little Mere, cheshire, UK,in 1993 and 1994". (1999), 337-348.

APA	BEKLİOĞLU M, MOOS B (1999). Diurnal variation of water chemistry and zooplankton in Little Mere, cheshire, UK,in 1993 and 1994. Turkish Journal of Zoology, 23(4), 337 - 348.
Chicago	BEKLİOĞLU Meryem,MOOS Brian Diurnal variation of water chemistry and zooplankton in Little Mere, cheshire, UK,in 1993 and 1994. Turkish Journal of Zoology 23, no.4 (1999): 337 - 348.
MLA	BEKLİOĞLU Meryem,MOOS Brian Diurnal variation of water chemistry and zooplankton in Little Mere, cheshire, UK,in 1993 and 1994. Turkish Journal of Zoology, vol.23, no.4, 1999, ss.337 - 348.
AMA	BEKLİOĞLU M,MOOS B Diurnal variation of water chemistry and zooplankton in Little Mere, cheshire, UK,in 1993 and 1994. Turkish Journal of Zoology. 1999; 23(4): 337 - 348.
Vancouver	BEKLİOĞLU M,MOOS B Diurnal variation of water chemistry and zooplankton in Little Mere, cheshire, UK,in 1993 and 1994. Turkish Journal of Zoology. 1999; 23(4): 337 - 348.
IEEE	BEKLİOĞLU M,MOOS B "Diurnal variation of water chemistry and zooplankton in Little Mere, cheshire, UK,in 1993 and 1994." Turkish Journal of Zoology, 23, ss.337 - 348, 1999.
ISNAD	BEKLİOĞLU, Meryem - MOOS, Brian. "Diurnal variation of water chemistry and zooplankton in Little Mere, cheshire, UK,in 1993 and 1994". Turkish Journal of Zoology 23/4 (1999), 337-348.