Search Results - "Impson, Dean"

Designing a conservation area network that supports the representation and persistence of freshwater biodiversity by NEL, JEANNE L, REYERS, BELINDA, ROUX, DIRK J, DEAN IMPSON, N, COWLING, RICHARD M

“…1. The progression of approaches in systematic conservation planning from representation to representation and persistence has greatly enhanced its potential…”
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Down, but not out: Recent decline of Berg–Breede River whitefish (Barbus andrewi) in the upper Hex River, South Africa by Graham, Shaun, Shelton, Jeremy M., Esler, Karen J., Impson, N. Dean

“…The Berg–Breede River whitefish, Barbus andrewi, an endangered Cape Floristic Region endemic, was once widespread in both the Berg and Breede River catchments…”
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Coordinated approaches to rehabilitating a river ecosystem invaded by alien plants and fish by Impson, N Dean, van Wilgen, Brian W, Weyl, Olaf L F

“…Large sums have been spent on controlling invasive alien species in South Africa over the past two decades, but documented accounts of successes are almost…”
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Using a head‐start conservation intervention to boost spawning numbers of the endangered Clanwilliam sandfish by Cerrilla, Cecilia, Flemming, Leonard, Griffiths, Charles L., Impson, Dean, Jordaan, Martine S., Kajee, Mohammed, Paxton, Bruce R., Walt, Johannes A., Whitehead, Thomas Otto, Shelton, Jeremy M.

“…Freshwater ecosystems are the most threatened on Earth, with many species facing extinction. The Clanwilliam sandfish (Labeo seeberi) is South Africa's most…”
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Genetic and Morphological Characterization of Freshwater Shrimps (Caridina africana Kingsley, 1882) Reveals the Presence of Alien Shrimps in the Cape Floristic Region, South Africa by Mirimin, Luca, Kitchin, Natasha, Impson, Dean N, Clark, Paul F, Richard, Jasmine, Daniels, Savel R, Roodt-Wilding, Rouvay

“…Morphological identification and molecular data (mtDNA COI) were used to resolve the taxonomic identity of a non-native freshwater shrimp in the Cape Floristic…”
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How the Freshwater Biodiversity Information System (FBIS) is supporting national freshwater fish conservation decisions in South Africa by Kajee, Mohammed, Henry, Dominic A. W., Dallas, Helen F., Griffiths, Charles L., Pegg, Josephine, Van der Colff, Dewidine, Impson, Dean, Chakona, Albert, Raimondo, Domitilla C., Job, Nancy M., Paxton, Bruce R., Jordaan, Martine S., Bills, Roger, Roux, Francois, Zengeya, Tsungai A., Hoffman, Andre, Rivers-Moore, Nick, Shelton, Jeremy M.

“…In South Africa, anthropogenic pressures such as water over-abstraction, invasive species impacts, land-use change, pollution, and climate change have caused…”
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Threatened Endemic Fishes in South Africa's Cape Floristic Region: A New Beginning for the Rondegat River by Weyl, Olaf L. F, Finlayson, Brian, Impson, N. Dean, Woodford, Darragh J, Steinkjer, Jarle

“…Nonnative fishes threaten native fish communities in many rivers of the world. In South Africa's Cape Floristic Region, predation by nonnative fishes has…”
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Temperature mediates the impact of non-native rainbow trout on native freshwater fishes in South Africa’s Cape Fold Ecoregion by Shelton, Jeremy M., Weyl, Olaf L. F., Esler, Karen J., Paxton, Bruce R., Impson, N. Dean, Dallas, Helen F.

“…Introduced rainbow trout Oncorhynchus mykiss have invaded many headwater streams in South Africa’s Cape Fold Ecoregion (CFE) and pose arguably the greatest…”
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Successful mechanical eradication of spotted bass (Micropterus punctulatus (Rafinesque, 1819)) from a South African river by Walt, Johannes A., Marr, Sean M., Wheeler, Marius J., Impson, N. Dean, Garrow, Craig, Weyl, Olaf L.F.

“…Following the discovery in 2007 of non‐native spotted bass (Micropterus punctulatus (Rafinesque, 1819)) in the Thee River, Olifants‐Doring River system,…”
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Vulnerability of Cape Fold Ecoregion freshwater fishes to climate change and other human impacts by Shelton, Jeremy M., Weyl, Olaf L.F., Chakona, Albert, Ellender, Bruce R., Esler, Karen J., Impson, N. Dean, Jordaan, Martine S., Marr, Sean M., Ngobela, Tumisho, Paxton, Bruce R., Van Der Walt, Johannes A., Dallas, Helen F.

“…Native freshwater fish populations throughout South Africa's Cape Fold Ecoregion (CFE) are in decline as a result of human impacts on aquatic habitats,…”
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Ecosystem responses to the eradication of common carp Cyprinus carpio using rotenone from a reservoir in South Africa by Dalu, Tatenda, Bellingan, Terence A., Gouws, Jeanne, Impson, N. Dean, Jordaan, Martine S., Khosa, Dumisani, Marr, Sean M., Mofu, Lubabalo, Schumann, Mandy, Slabbert, Etienne, Walt, Johannes A., Wasserman, Ryan J., Weyl, Olaf L. F.

“…The control of invasive alien fish populations using piscicides to alleviate impacts on native biota is a controversial conservation strategy because the…”
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Threatened fishes of the world: Pseudobarbus burgi (Boulenger, 1911) (Cyprinidae) by IMPSON, Dean

“…The Berg River redfin is a critically endangered cyprinid fish found only in the Berg and Verlorenvlei River systems of South Africa's Western Cape. The…”
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The impact of invasive fish and invasive riparian plants on the invertebrate fauna of the Rondegat River, Cape Floristic Region, South Africa by Lowe, Steven R, Woodford, Darragh J, Impson, Dean N, Day, Jenny A

“…Invasive fish and plants are widespread in the rivers and riparian zones of the Cape Floristic Region of South Africa and represent potential threats to the…”
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Threatened fishes of the world : Barbus serra Peters, 1864 (Cyprinidae) by IMPSON, D

“…Barbus serra, commonly known as the sawfin, is an endangered cyprinid fish found only in the Olifants River system of South Africa. Data records reveal that…”
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Rethinking refuges: Implications of climate change for dam busting by Beatty, Stephen, Allen, Mark, Lymbery, Alan, Jordaan, Martine S., Morgan, David, Impson, Dean, Marr, Sean, Ebner, Brendan, Weyl, Olaf L.F.

“…Climate change is projected to alter river discharge in every populated basin in the world. In some parts of the world, dam removal now outpaces their…”
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Rapid population decline in one of the last recruiting populations of the endangered Clanwilliam sandfish (Labeo seeberi): The roles of climate change and non‐native fish by Cerrilla, Cecilia, Afrika, Johannes, Impson, Dean, Jordaan, Martine S., Kotze, Nathan, Paxton, Bruce R., Reed, Cecile, Schumann, Mandy, Walt, Johannes A., Shelton, Jeremy M.

“…Freshwater fish are in decline worldwide as a result of introduced non‐native species, impoundment, water quality changes, over‐ion, and climate change. The…”
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Effect of an intensive mechanical removal effort on a population of non‐native rainbow trout Oncorhynchus mykiss in a South African headwater stream by Shelton, Jeremy, Weyl, Olaf, Van Der Walt, Johannes, Marr, Sean, Impson, Dean, Maciejewski, Kristine, Tye, Donovan, Dallas, Helen, Esler, Karen

“…Invasions by non‐native species can compromise the conservation value of otherwise pristine headwater streams. While both developed and developing countries…”
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Coordinating invasive alien species management in a biodiversity hotspot: The CAPE Invasive Alien Animals Working Group by Davies, Sarah J., Bell, Jonathan A., Impson, Dean, Mabin, Clova, Meyer, Marco, Rhoda, Chandre, Stafford, Louise, Stephens, Kirstin, Tafeni, Mfundo, Turner, Andrew A., Van Wilgen, Nicola J., Wilson, John R.U., Wood, Julia, Measey, John

“…Background: The effectiveness of invasive alien species management in South Africa, and elsewhere, can be mproved by ensuring there are strong links and…”
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Preliminary evaluation of the impact of invasive smallmouth bass Micropterus dolomieu on native fish abundance in the Witte River, Cape Floristic Region, South Africa by Shelton, Jeremy M., Day, Jenny A., Dean Impson, N.

“…The impact of invasive smallmouth bass, Micropterus dolomieu, on the abundance of two native fish species, Breede River redfin, Pseudobarbus burchelli, and…”
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The predatory impact of invasive alien smallmouth bass, Micropterus dolomieu (Teleostei: Centrarchidae), on indigenous fishes in a Cape Floristic Region mountain stream by Woolford, D.J. (Cape Town Univ., Rondebosch (South Africa). Zoology Dept.), Impson, N.D, Day, J.A, Bills, I.R

“…Fish populations in the Rondegat River, a mountain stream in the Olifants-Doring system in the Cape Floristic Region, South Africa were surveyed to assess the…”
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