Results 61 to 70 of about 235,489 (205)

Temporal and spatial variations in phytoplankton productivity in surface waters of a warm-temperate, monomictic lake in New Zealand [PDF]

open access: yes, 2010
Surface phytoplankton productivity measurements were carried out in morphologically complex Lake Rotoiti with the objective of defining variations between sites and seasons, and the dominant environmental drivers of these variations.
Hamilton, David P.   +2 more
core   +1 more source

Hydrochemistry, ostracods and diatoms in a deep, tropical, crater lake in Western Mexico

open access: yesJournal of Limnology, 2013
Crater lakes are sensitive to natural and anthropogenic environmental changes and it is important to define and understand their current status in order to evaluate past changes related to climate variability and future ones associated with modern global
Margarita Caballero   +5 more
doaj   +1 more source

Florida hurricanes and tropical storms: 1871-1993, an historical review [PDF]

open access: yes, 1994
In recent times, from 1871-1993, nearly 1,0OO tropical cyclones of tropical storm or hurricane intensity have s cur red in the North Atlantic, Caribbean Sea, and Gulf of Mexico.
Doehring, Fred   +2 more
core  

A new species of freshwater sponge (Porifera:Spongillidae) of the genus Radiospongilla from Lake Pedder in Tasmania [PDF]

open access: yes, 2008
Lake Pedder is the home of a number of relictual organisms. One of those, a new species of freshwater sponge of the genus Radiospongilla, is described herein. Radiospongilla pedderensis sp. nov.
Forteath, GNR, Osborn, AW, Stanisic, J
core   +3 more sources

East African Fisheries Research Organization Annual Report 1952 [PDF]

open access: yes, 1952
Several important advances have been made in our knowledge both regarding the factors which determine fertility in tropical lakes and the fish that live in them.

core  

Temporal variation of phytoplankton in a small tropical crater lake, Costa Rica

open access: yesRevista de Biología Tropical, 2010
The temporal variation in lake’s phytoplankton is important to understand its general biodiversity. For tropical lakes, it has been hypothesized that they follow a similar pattern as temperate ones, on a much accelerated pace; nevertheless, few case ...
Gerardo Umaña-Villalobos
doaj  

Distribution and fluctuations of backswimmers (Notonectidae) in a tropical shallow lake and predation on microcrustaceans

open access: yesBrazilian Journal of Biology
Notonectids are widely distributed in freshwaters and can prey on zooplankton in temperate lakes. However, its role in structuring the zooplankton community is unknown in tropical lakes.
A. R. Domingos, M. S. Arcifa
doaj   +1 more source

Africa: the FBA connection [PDF]

open access: yes, 1986
Since its inception in the 1930's the Freshwater Biological Association at Windermere, England has been involved in research on African lakes and rivers.
Fryer, G., Talling, J.F.
core  

An instance of cyclonic upwelling in the southern offshore waters of Lake Victoria [PDF]

open access: yes, 1971
Evidence is presented that cyclonic upwelling took place in the southern offshore waters of Lake Victoria on the 22nd to the 23rd March, 1969. Before this, the main upper thermocline was tilted downwards in the leeward northern half of the lake in ...
Kitaka, G.E.B.
core  

Comparison of otolith readability and reproducibility of counts of translucent zones using different otolith preparation methods for four endemic Labeobarbus species in Lake Tana, Ethiopia [PDF]

open access: yes, 2019
The analysis of fish age data is vital for the successful conservation of fish. Attempts to develop optimal management strategies for effective conservation of the endemic Labeobarbus species are strongly affected by the lack of accurate age estimates ...
Anteneh, Wassie   +6 more
core   +2 more sources

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