scholarly journals DYNAMICS OF ANIMAL COMMUNITY IN AN INTERMITTENT RIVER REACH

2008 ◽  
Vol 36 ◽  
pp. 445-455 ◽  
Author(s):  
Hiroshi NAKANO ◽  
Shogo DOHI ◽  
Yuji MINEMATSU ◽  
Mikio INOUE ◽  
Yo MIYAKE
Keyword(s):  
River Reach ◽  
Animal Community ◽  
Intermittent River

“As Slow as a Tortoise, and as Clever as a Hare.” Folktales as Lessons on Democracy, Equal Opportunities, and Human Rights among the Ndebele

2018 ◽  
Vol 28 (1) ◽  
Author(s):  
Lindiwe Ndlovu ◽  
Faith Sibanda
Keyword(s):  
Human Rights ◽  
Indigenous Knowledge ◽  
Indigenous People ◽  
Developing World ◽  
Equal Opportunities ◽  
Long Time ◽  
Animal Community ◽  
Do So

Indigenous African societies have, for a long time, been using their knowledge for the betterment of their lives. They have also demonstrated an ability to manipulate their immediate or remote surroundings to live sustainably. Those who claim to fight for equal and human rights in Africa do so under the misconception that they, and the developing world, have historically and inherently violated, and continue to violate, human rights in numerous ways. While this might not be completely dismissed, there is a plethora of evidence from African folktales to demonstrate that Africans have not only respected human rights, but have also encouraged equal opportunities for every member of their society. This article cross-examines Ndebele folktales with the intention of demonstrating that African indigenous knowledge exhibited through folktales was a well-organised system, which ensured respect for human rights for all members, regardless of their physical or social stature. Central to this discussion are the folktales which focus on the role played by the vulnerable members of the animal community, who replicate their human counterparts. Folktales are unarguably a creation by the indigenes and emanate from their socio-political experiences, as well as their observations of the surroundings. This suggests that indigenous people already had an idea about human rights as well as the need for equal opportunities since time immemorial. 

ERF1_2 -- Enhanced River Reach File 2.0

2003 ◽  
Author(s):  
Jacqueline V. Nolan ◽  
John W. Brakebill ◽  
Richard B. Alexander ◽  
Gregory E. Schwarz
Keyword(s):  
River Reach

DOES A HISTORICAL FLOOD IN AN INTRA-DAM RIVER REACH MAKE A DIFFERENCE? A CASE STUDY OF THE 2011 FLOOD IN THE GARRISON REACH OF THE MISSOURI RIVER

2016 ◽  
Author(s):  
Edward R. Schenk ◽  
◽  
Adam Benthem ◽  
Katherine Skalak ◽  
Cliff R. Hupp
Keyword(s):  
Missouri River ◽  
River Reach

scholarly journals Relationships between resource availability and elevation vary between metrics creating gradients of nutritional complexity

Oecologia ◽  
2021 ◽  
Vol 195 (1) ◽  
pp. 213-223
Author(s):  
Mark A. Lee ◽  
Grace Burger ◽  
Emma R. Green ◽  
Pepijn W. Kooij
Keyword(s):  
Species Richness ◽  
Plant Species ◽  
Resource Availability ◽  
Plant Biomass ◽  
Plant Species Richness ◽  
Mineral Contents ◽  
Nutritive Values ◽  
Animal Community ◽  
Nutritional Chemistry ◽  
The Relationship

AbstractPlant and animal community composition changes at higher elevations on mountains. Plant and animal species richness generally declines with elevation, but the shape of the relationship differs between taxa. There are several proposed mechanisms, including the productivity hypotheses; that declines in available plant biomass confers fewer resources to consumers, thus supporting fewer species. We investigated resource availability as we ascended three aspects of Helvellyn mountain, UK, measuring several plant nutritive metrics, plant species richness and biomass. We observed a linear decline in plant species richness as we ascended the mountain but there was a unimodal relationship between plant biomass and elevation. Generally, the highest biomass values at mid-elevations were associated with the lowest nutritive values, except mineral contents which declined with elevation. Intra-specific and inter-specific increases in nutritive values nearer the top and bottom of the mountain indicated that physiological, phenological and compositional mechanisms may have played a role. The shape of the relationship between resource availability and elevation was different depending on the metric. Many consumers actively select or avoid plants based on their nutritive values and the abundances of consumer taxa vary in their relationships with elevation. Consideration of multiple nutritive metrics and of the nutritional requirements of the consumer may provide a greater understanding of changes to plant and animal communities at higher elevations. We propose a novel hypothesis for explaining elevational diversity gradients, which warrants further study; the ‘nutritional complexity hypothesis’, where consumer species coexist due to greater variation in the nutritional chemistry of plants.

scholarly journals Hydrological, Environmental and Taxonomical Heterogeneity during the Transition from Drying to Flowing Conditions in a Mediterranean Intermittent River

Biology ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 316
Author(s):  
Andy Banegas-Medina ◽  
Isis-Yelena Montes ◽  
Ourania Tzoraki ◽  
Luc Brendonck ◽  
Tom Pinceel ◽  
...  
Keyword(s):  
Ecosystem Services ◽  
Base Flow ◽  
Ephemeral Streams ◽  
Biogeochemical Processes ◽  
Flow Conditions ◽  
Intermittent Rivers ◽  
Terrestrial Biodiversity ◽  
Turn Over ◽  
Zero Flow ◽  
Intermittent River

Intermittent rivers and ephemeral streams (IRES) are increasingly studied because of their often-unique aquatic and terrestrial biodiversity, biogeochemical processes and associated ecosystem services. This study is the first to examine the hydrological, physicochemical and taxonomic variability during the dry-wet transition of an intermittent river in the Chilean Mediterranean Zone. Based on 30-years of river monitoring data and the TREHS tool, the hydrology of the river was characterised. Overall, the river shows a significant reduction in streamflow (−0.031 m3/s per year) and a substantial increase of zero flow days (+3.5 days per year). During the transition of hydrological states, variations were observed in the environmental conditions and invertebrate communities. During the drying phase, abundance, richness, and diversity were highest, while species turn-over was highest during base flow conditions. The disconnected pools and the flow resumption phases were characterised by high proportions of lentic taxa and non-insects, such as the endemic species of bivalves, gastropods, and crustaceans, highlighting the relevance of disconnected pools as refuges. Future climatic change scenarios are expected to impact further the hydrology of IRES, which could result in the loss of biodiversity. Biomonitoring and conservation programmes should acknowledge these important ecosystems.

scholarly journals Dam Operations and Subsurface Hydrogeology Control Dynamics of Hydrologic Exchange Flows in a Regulated River Reach

2018 ◽  
Author(s):  
Pin Shuai ◽  
Xingyuan Chen ◽  
Xuehang Song ◽  
Glenn Hammond ◽  
John Zachara ◽  
...  
Keyword(s):  
Regulated River ◽  
Exchange Flows ◽  
River Reach ◽  
Hydrologic Exchange
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