Search Results - "Impson, N. 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…”
Get full text

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…”
Get full text

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…”
Get full text

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…”
Get full text

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…”
Get full text

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,…”
Get full text

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,…”
Get full text

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…”
Get full text

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…”
Get full text

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…”
Get full text

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…”
Get full text

Coordinated approaches to rehabilitating a river ecosystem invaded by alien plants and fish : news & views by Van Wilgen, Brian W., Van Wilgen, Brian W., Impson, N. Dean, 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…”
Get full text

Down, but not out: Recent decline of Berg–Breede River whitefish by Graham, Shaun, Shelton, Jeremy M, Impson, N. Dean, Esler, Karen J

“…The Berg–Breede River whitefish, Barbus andrewi, an endangered Cape Floristic Region endemic, was once widespread in both the Berg and Breede River catchments…”
Get full text

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…”
Get full text

Preliminary evaluation of the impact of invasive smallmouth bass Micropterus dolomieu on native fish abundance in the Witte River, Cape Floristic Region, South Africa : short communication by Shelton, Jeremy M., Shelton, Jeremy M., Impson, N. Dean, Day, Jenny A.

“…The impact of invasive smallmouth bass, Micropterus dolomieu, on the abundance of two native fish species, Breede River redfin, Pseudobarbus burchelli, and…”
Get full text

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, Impson, N. Dean

“…The impact of invasive smallmouth bass, Micropterusdolomieu, on the abundance of two native fish species, Breede River redfin, Pseudobarbus burchelli, and Cape…”
Get full text

Linked effects of dam-released floods and water temperature on spawning of the Clanwilliam yellowfish Barbus capensis by King, Jackie, Cambray, Jim A, Dean Impson, N

“…In South Africa, modified flow regimes designed to maintain ecosystem functioning at some pre-determined level are recommended for all rivers involved in major…”
Get full text