Stream Order and Species Diversity of Fishes in an Intermittent Oklahoma Stream

1967 ◽  
Vol 78 (2) ◽  
pp. 428 ◽  
Author(s):  
Richard C. Harrel ◽  
Billy J. Davis ◽  
Troy C. Dorris
Keyword(s):  
Species Diversity ◽  
Stream Order

scholarly journals Fish diversity in streams/rivers of Kalakad-Mundanthurai Tiger Reserve, Tamil Nadu, India

2020 ◽  
Vol 12 (15) ◽  
pp. 17077-17092
Author(s):  
Kannan K. ◽  
J.A. Johnson
Keyword(s):  
Species Diversity ◽  
Tamil Nadu ◽  
Management Strategies ◽  
Iucn Red List ◽  
Red List ◽  
Fish Diversity ◽  
Stream Order ◽  
Faunal Assemblage ◽  
Tiger Reserve ◽  
High Species Diversity

This article describes fish diversity in streams and rivers of Kalakad-Mundanthurai Tiger Reserve (KMTR), Tamil Nadu.  Fifty species of fishes belonging to 10 orders, 15 families, and 32 genera are recorded.  Seven species, Garra joshuai, G. kalakadensis, Haludaria kannikattiensis, Hypselobarbus tamiraparaniei Mesonemachilus tambraparniensis, Neolissochilus tamiraparaniensis, and Dawkinsia tambraparniei are strictly endemic to this protected area.  The minnows, Devario aequipinnatus, Garra mullya, and G. kalakadensis are widely distributed in KMTR streams.  High species diversity (H’=2.81) was recorded in Gadana River, whereas low species diversity (H’=0.61) was registered in Poonkulam area.  Bray-Curtis similarity analysis showed that sites along the headwater streams have similar faunal assemblage.  Result of regression analysis revealed that there is a significant pattern explained between stream order and species richness (r2=0.86; p<0.05).  Among 50 species, four (Garra kalakadensis, G. joshuai, Dawkinsia tambraparniei, and Tor malabaricus) are listed in threatened categories of IUCN Red List.  Important threats faced by endemic species and their management strategies are discussed.

Diatoms in the Early Valdai (Weichselian) sediments in Lake Ladoga basin

2019 ◽  
pp. 225-228
Author(s):  
Anna V. Ludikova
Keyword(s):  
Species Diversity ◽  
High Energy ◽  
Lake Ladoga ◽  
Diatom Assemblages ◽  
Marine Diatoms ◽  
Selective Preservation

The pioneer diatom study of the Early Weichselian (Valdai) sediments in Lake Ladoga basin was performed. The specifics of the diatom assemblages (co-occurrence of ecologically incompatible taxa, poor species diversity, low diatom concentration and selective preservation) suggest that during the Early Weichselian time intense erosion of previously deposited marine Eemian (Mikulino) sediments prevailed, which resulted in re-deposition of marine diatoms. The sedimentation took place in high-energy environments unfavorable for diatom accumulation and preservation.

Algae of the Sefunim Cave (Israel): species diversity affected by light, humidity and rock stresses

2009 ◽  
Vol 11 (2) ◽  
pp. 99-116 ◽  
Author(s):  
O. N. Vinogradova ◽  
Eviatar Nevo ◽  
Solomon P. Wasser
Keyword(s):  
Species Diversity
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