Benefits of permanent adoption of virtual conferences for conservation ecology and ecologists

2022 ◽  
Author(s):  
Lauren M. Kuehne ◽  
Robert J. Rolls ◽  
Kate J. Brandis ◽  
Kai Chen ◽  
Kevin M. Fraley ◽  
...  
Keyword(s):  
Conservation Ecology

scholarly journals Sixty Years with the Chrysobalanaceae

2020 ◽  
Author(s):  
Ghillean T. Prance
Keyword(s):  
Economic Botany ◽  
Field Studies ◽  
Molecular Evidence ◽  
New Techniques ◽  
Conservation Ecology ◽  
The Past ◽  
New Findings ◽  
The Family ◽  
Molecular Studies ◽  
Economic Use

AbstractA review is given of the studies of Ghillean Prance and associates on the Chrysobalanaceae over the past sixty years. This has focussed on defining the generic boundaries in the family and on monographic work with a worldwide approach to this pantropical family. The importance of field studies for work on monographs and Floras is emphasized. Monographs are still the basis for much work on conservation, ecology and economic botany and are needed as a foundation for molecular studies. The importance of being open to experimenting with new techniques and as a result being willing to change the taxonomy in accordance with new findings is demonstrated and emphasized. The twelve genera of the Chrysobalanaceae at the beginning of this career-long study have now increased to twenty-eight in order to present a much better monophyletic and evolutionary arrangement based on recent molecular evidence. In particular it was necessary to divide and rearrange the originally large genera Parinari and Licania into a number of smaller segregate genera. All known species were included in a worldwide monograph published in 2003. A brief review of the economic use for the family is given.

The Tasmanian Endemic Shrub Acacia axillaris: Conservation Ecology Applied to the Question of Rarity or Vulnerability

1999 ◽  
Vol 47 (1) ◽  
pp. 97 ◽  
Author(s):  
J. B. Kirkpatrick ◽  
A. J. J. Lynch ◽  
L. Gilfedder
Keyword(s):  
Stand Structure ◽  
Conservation Status ◽  
Fire Regimes ◽  
Weed Competition ◽  
Conservation Ecology ◽  
Australian Species ◽  
Tasmanian Endemic ◽  
Germination Requirements ◽  
Land Clearance

Acacia axillaris Benth. had been recommended for downgrading from a conservation status of vulnerable to one of rare in response to changed knowledge of its distribution. Ecological investigations of its phytosociology, stand structure, germination requirements, soil seed store and response to fire and disturbance indicate, however, that it is susceptible to elimination by fire regimes that allow the survival of most of its co-occurring species and most other Australian species of Acacia. The species is also vulnerable to land clearance and weed competition in the lowland part of its range, which is largely on private land.A. axillaris may be a refugial species, better suited to glacial Tasmania than to interglacial Tasmania. On ecological evidence, the species should retain its conservation status of vulnerable to extinction.

Conservation, Ecology, and Management of Catfish: The Second International Symposium

2011 ◽  
Keyword(s):  
United States ◽  
Body Condition ◽  
Ictalurus Punctatus ◽  
Channel Catfish ◽  
Aeromonas Hydrophila ◽  
Condition Index ◽  
The United States ◽  
Southern United States ◽  
Conservation Ecology ◽  
Columnaris Disease

<em>Abstract</em>.—U.S. Game and Fish agencies and farm-pond owners throughout the United States use commercially produced channel catfish <em>Ictalurus punctatus </em>fingerlings transported from the southern United States for supplemental stocking. We conducted six trials to examine whether pathogen load, body condition, and select environmental factors influence fingerling survival following transport and cage stocking. Fingerlings were sampled prior to stocking and weekly for the following 3 weeks. Weights and lengths were measured, and a relative condition index was used to quantify body condition. Skin scrapings and gill clippings were examined microscopically for pathogens, and posterior kidney was assayed for <em>Aeromonas hydrophila</em>. Mortality was either less than 10% (four trials) or catastrophic (two trials). A Columnaris disease epizootic was associated with ~50% mortality in one trial, and a red sore disease epizootic was associated with ~80% mortality in another. Body condition or other pathogens, present initially or acquired in study ponds, were not associated with high mortality. The first week appears to be critical for the survival of channel catfish fingerlings following transport.

Conservation, Ecology, and Management of Catfish: The Second International Symposium

2011 ◽  
Keyword(s):  
International Symposium ◽  
Ictalurus Punctatus ◽  
Channel Catfish ◽  
High Abundance ◽  
Sampling Effort ◽  
Conservation Ecology ◽  
Standard Work ◽  
Second International

<em>Abstract</em>.—Baited, tandem hoop nets are increasingly being used to sample channel catfish <em>Ictalurus punctatus</em> populations in reservoirs. However, there have been no published studies to address the effect of soak duration on precision of catch. The effect of soak duration on precision of channel catfish catch in baited, tandem hoop nets was evaluated in three Texas reservoirs. Precision of channel catfish catch was inconsistent among reservoirs when one-night soak durations were used but improved with two-night and three-night soak durations. Although catch precision was similar for two- and three-night soak durations, sampling effort could be doubled using two-night rather than three-night soak durations during a standard work week if a manager did not prefer to leave gear unattended during a weekend. Thus, we recommend use of baited, tandem hoop-net series with two-night soak durations to sample high-abundance channel catfish populations in reservoirs.

Conservation, Ecology, and Management of Catfish: The Second International Symposium

2011 ◽  
Keyword(s):  
International Symposium ◽  
Size Structure ◽  
Pylodictis Olivaris ◽  
Social Event ◽  
Conservation Ecology ◽  
Party Size ◽  
Catch And Release ◽  
Flathead Catfish ◽  
Creel Survey ◽  
Total Effort

<em>Abstract</em>.—Hand grabbing for catfish has been practiced in Mississippi for many years; however, few studies have addressed this fishing technique. Ross Barnett Reservoir is a<em> Abstract</em>.—Hand grabbing for catfish has been practiced in Mississippi for many years; however, few studies have addressed this fishing technique. Ross Barnett Reservoir is a 13,360-ha impoundment located in central Mississippi that supports a substantial hand grabbing fishery. A roving creel survey was conducted during the 2007 and 2008 Mississippi hand grabbing season (May 1–July 15). Objectives were to estimate catch, harvest, and effort of hand grabbers and to solicit information concerning techniques used by these anglers. A total of 37 parties was interviewed, consisting of 150 total anglers. Seventy percent of the parties interviewed targeted flathead catfish <em>Pylodictis olivaris</em>. Ninety-five percent of the parties used a probe, and all parties fished boxes located at depths of 1–2 m. Average party size was four anglers, indicating that hand grabbing is a social event. For 2007 and 2008, anglers spent an estimated 4,424 and 5,259 h hand grabbing, respectively. An estimated 3,313 and 2,589 catfish were harvested in 2007 and 2008, respectively. Based on size structure of harvested catfish, hand grabbing anglers at Ross Barnett Reservoir do not appear to be size-selective. Most anglers were harvest-oriented, with catch-and-release estimates making up only 12% and 9%, respectively. Future creel surveys should be directed at the total effort allocated toward catfishing, in an effort to determine the effect of hand grabbing on Ross Barnett Reservoir.

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