Results 21 to 30 of about 18,201 (231)

Ecology of Cladocera species from Central America based on subfossil assemblages

open access: yesAdvances in Oceanography and Limnology, 2016
Cladocera species composition was analyzed in surface sediments of 29 lakes in Central America (Guatemala, El Salvador and Honduras). The material studied was collected with an Ekman grab in autumn 2013 from lakes located in lowland, highland and ...
Marta Wojewódka   +6 more
doaj   +1 more source

The contribution of differential hatching success to the fitness of species and interspecific hybrids [PDF]

open access: yes, 2007
Resting egg banks of microcrustaceans have been used to reconstruct the evolutionary and ecological history of species. However, recent studies provided evidence for a discrepancy between dormant propagules in the sediment and the planktonic population ...
Brede, Nora   +3 more
core   +1 more source

Subfossil faunal and floral remains (Cladocera, Pediastrum) in two northern Lobelia lakes in Finland

open access: yesKnowledge and Management of Aquatic Ecosystems, 2011
The analysis of lake sediment cores have been long used as historical integrators of environmental changes. Nutrient poor isoetid lakes remain under studied in the north boreal region.
Szeroczyńska K., Zawisza E.
doaj   +1 more source

Impact of single and repeated applications of the insecticide chlorpyrifos on tropical freshwater plankton communities [PDF]

open access: yes, 2008
This paper describes the effects of a single and a repeated application of the organophosphorus insecticide chlorpyrifos on zooplankton and phytoplankton communities in outdoor microcosms in Thailand.
Brink, P.J., van den   +2 more
core   +3 more sources

The role of paleolimnology in climate and environment reconstruction and lake restoration in light of research on selected bioindicators [PDF]

open access: yesThe Holistic Approach to Environment, 2020
Paleolimnologists and ecologists study biotic and abiotic variables to track long-term and short-term environment changes. Microscopic invertebrates, phytoplankton of freshwater ecosystems, and pollen grains have been extensively studied during the last ...
Marta Wojewódka, Dario Hruševar
doaj   +1 more source

Consecutive earthquakes temporarily restructured the zooplankton community in an Alpine Lake [PDF]

open access: yes, 2012
Two consecutive earthquakes temporary changed a zooplankton community in a high-mountain Lake Krn (altitude 1383 m a.s.l.). It was dominated by the eurytherm copepod, Cyclops vicious, until 1998, when the first earthquake hit the lake (EMS = 5.6).
Brancelj, Anton   +4 more
core   +1 more source

Identifying invertebrate invasions using morphological and molecular analyses: North American Daphnia ‘pulex’ in New Zealand fresh waters [PDF]

open access: yes, 2012
We used a DNA barcoding approach to identify specimens of the Daphnia pulex complex occurring in New Zealand lakes, documenting the establishment of non-indigenous North American Daphnia 'pulex'.
Banks, Jonathan C.   +4 more
core   +2 more sources

Factors affecting methylmercury biomagnification by a widespread aquatic invertebrate predator, the phantom midge larvae Chaoborus [PDF]

open access: yes, 2012
MeHg biomagnification by the phantom midge Chaoborus in relation to MeHg concentrations in their prey and its migratory behavior was investigated in two Canadian Precambrian Shield lakes.
Aldamman, Lama   +5 more
core   +2 more sources

An annotated checklist of freshwater copepoda (crustacea, hexanauplia) from continental Ecuador and the Galapagos archipelago [PDF]

open access: yes, 2019
An annotated checklist of the free-living freshwater Copepoda recorded in different regions in Ecuador (including the Amazon, the Andes, the coastal region, and the Galapagos Islands) is here provided.
Corgosinho P. H. C.   +6 more
core   +1 more source

Biến động cấu trúc thành phần loài giáp xác râu ngành (Cladocera) dưới sự thay đổi của độ mặn vùng cửa sông Hậu

open access: yesTạp chí Khoa học Đại học Cần Thơ
Nghiên cứu được thực hiện nhằm đánh giá sự biến động thành phần loài giáp xác râu ngành (Cladocera) dưới sự thay đổi của độ mặn ở vùng cửa sông Hậu. Độ mặn và Cladocera được thu hàng tháng trong thời gian từ tháng 7/2017 đến tháng 6/2018 vào lúc đỉnh ...
Nguyễn Công Tráng   +2 more
doaj   +1 more source

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