Geomorphic change in Dingzi Bay, East China since the 1950s: impacts of human activity and fluvial input

2016 ◽  
Vol 11 (2) ◽  
pp. 385-396 ◽  
Author(s):  
Qing Tian ◽  
Qing Wang ◽  
Yalong Liu
2017 ◽  
Vol 24 (1) ◽  
pp. 92-102 ◽  
Author(s):  
Xumao Zhao ◽  
Baoping Ren ◽  
Paul A. Garber ◽  
Xinhai Li ◽  
Ming Li

Diversity ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 304 ◽  
Author(s):  
Iván Vera-Escalona ◽  
M. Lisette Delgado ◽  
Evelyn Habit ◽  
Daniel E. Ruzzante

Galaxiid fishes from South America are represented by three genera (Aplochiton, Brachygalaxias and Galaxias) and eight species. Their genetic patterns have been studied over the last two decades to disentangle how historical and contemporary processes influenced their biogeographic distribution and phylogeographic patterns. Here we review and synthesize this body of work. Phylogeographic approaches reveal the important role played by orogeny and the expansion/melting of glacial ice during the Quaternary. Populations retreated to glacial refugia during glacial times and some systems experienced drainage reversals from the Atlantic to the Pacific following deglaciation. Although most species expanded their populations and increased their genetic diversity during the Holocene, the introduction of salmonids and the construction of dams are likely to lead to a decline in genetic diversity for at least some species. An improvement in our understanding of the processes that influenced historical and contemporary diversity patterns among galaxiid and other native fishes in South America is necessary for addressing the cumulative and synergistic impacts of human activity on this unique freshwater fauna.


Evaluation ◽  
2020 ◽  
Vol 26 (2) ◽  
pp. 190-204 ◽  
Author(s):  
Astrid Brousselle ◽  
Jim McDavid

In the last century, human-led activities have drastically altered natural systems. The environmental impacts of human activity are so deleterious to living species and our biosphere that geologists have named this new geological era the Anthropocene, from anthropos, human being. Responses to the Anthropocene era call for drastic changes in all domains of activity. As evaluators, we claim to work for social betterment. We have a responsibility to adapt our approaches and practices to respond to this environmental challenge. The aim of this article is to raise awareness on the need to develop new approaches for evaluators in the Anthropocene. We first describe what this state of urgency represents for humans, the international commitments to take action, the solutions that exist, and what responding to this environmental challenge means for our profession.


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