scholarly journals Review of Aquatic Biodiversity Dynamics in the Okavango Delta: Resilience in a Highly Fluctuating Environment

2021 ◽  
Author(s):  
Belda Quetina Mosepele ◽  
Ketlhatlogile Mosepele
Keyword(s):  
Biological Diversity ◽  
Management Strategies ◽  
Flood Pulse ◽  
Natural Resources Management ◽  
Okavango Delta ◽  
Altered States ◽  
Ecosystem Level ◽  
Resilience Framework ◽  
Abiotic Interactions ◽  
Semi Arid

Wetlands are key ecosystems of high biological diversity that provide valuable ecosystem services. These are particularly important in water stressed semi-arid countries, which enhances their vulnerability to degradation. The Okavango Delta, a key wetland in Botswana, is characterised by dynamic inter and intra specific interactions. There are dynamic biotic and abiotic interactions in the system that enhances its resilience. The flood pulse is the main factor mediating bio-physical dynamics in this system. Despite the various perturbations that have been experienced in the system, the Delta has always been able to absorb them and retain its character at the general ecosystem level. These notwithstanding, there have been some changes at the local scale where the Delta has shifted regimes and entered into altered states as a consequence of either channel or lagoon failure. Management of these systems should ensure that their dynamic characteristics are maintained, and this is enshrined within the panarchy concept. Adopting the resilience framework in natural resources management allows for flexibility in devising management strategies to respond to future unexpected events.

Contrasting research approaches to managing mistletoes in commercial forests and wooded pasturesThis minireview is one of a collection of papers based on a presentation from the Stem and Shoot Fungal Pathogens and Parasitic Plants: the Values of Biological Diversity session of the XXII International Union of Forestry Research Organization World Congress meeting held in Brisbane, Queensland, Australia, in 2005.

Botany ◽  
2009 ◽  
Vol 87 (1) ◽  
pp. 1-9 ◽  
Author(s):  
Nick Reid ◽  
Simon F. Shamoun
Keyword(s):  
Biological Control ◽  
Fungal Pathogens ◽  
Biological Diversity ◽  
Management Strategies ◽  
Biodiversity Loss ◽  
Classical Biological Control ◽  
Dwarf Mistletoe ◽  
Silvicultural Treatments ◽  
Inundative Biological Control

Many mistletoe species are pests in agricultural and forest ecosystems throughout the world. Mistletoes are unusual “weeds” as they are generally endemic to areas where they achieve pest status and, therefore, classical biological control and broad-scale herbicidal control are usually impractical. In North American coniferous forests, dwarf mistletoe ( Arceuthobium spp.) infection results in major commercial losses and poses a public liability in recreation settings. Hyperparasitic fungi have potential as biological control agents of dwarf mistletoe, including species which attack shoots, berries, and the endophytic systems of dwarf mistletoe. Development of an inundative biological control strategy will be useful in situations where traditional silvicultural control is impractical or undesirable. In southern Australia, farm eucalypts are often attacked and killed by mistletoes ( Amyema spp.) in grazed landscapes where tree decline and biodiversity loss are major forms of land degradation. Although long-term strategies to achieve a balance between mistletoe and host abundance are promoted, many graziers want short-term options to treat severely infected trees. Recent research has revisited the efficiency and efficacy of silvicultural treatments and selective herbicides in appropriate situations. The results of recent research on these diverse management strategies in North America and Australia are summarized.

scholarly journals The Impact of Green Water Management Strategies on Household-Level Agricultural Water Productivity in a Semi-Arid Region: A Survey-based Assessment

Water ◽  
2017 ◽  
Vol 10 (1) ◽  
pp. 11 ◽  
Author(s):  
Afton Clarke-Sather ◽  
Xia Tang ◽  
Yonglan Xiong ◽  
Jiansheng Qu
Keyword(s):  
Water Management ◽  
Arid Region ◽  
Water Productivity ◽  
Management Strategies ◽  
Green Water ◽  
Agricultural Water ◽  
Household Level ◽  
Semi Arid Region ◽  
The Impact ◽  
Semi Arid

scholarly journals 2nd International Arctic Ungulate Conference

Rangifer ◽  
1996 ◽  
Vol 16 (2) ◽  
pp. 49
Author(s):  
A. Anonymous
Keyword(s):  
Population Dynamics ◽  
Behavior Genetics ◽  
Management Strategies ◽  
The United States ◽  
Research Unit ◽  
Federal Agencies ◽  
Lessons Learned ◽  
Ecosystem Level ◽  
Commercial Organizations ◽  
The University

The 2nd International Arctic Ungulate Conference was held 13-17 August 1995 on the University of Alaska Fairbanks campus. The Institute of Arctic Biology and the Alaska Cooperative Fish and Wildlife Research Unit were responsible for organizing the conference with assistance from biologists with state and federal agencies and commercial organizations. David R. Klein was chair of the conference organizing committee. Over 200 people attended the conference, coming from 10 different countries. The United States, Canada, and Norway had the largest representation. The conference included invited lectures; panel discussions, and about 125 contributed papers. There were five technical sessions on Physiology and Body Condition; Habitat Relationships; Population Dynamics and Management; Behavior, Genetics and Evolution; and Reindeer and Muskox Husbandry. Three panel sessions discussed Comparative caribou management strategies; Management of introduced, reestablished, and expanding muskox populations; and Health risks in translocation of arctic ungulates. Invited lectures focused on the physiology and population dynamics of arctic ungulates; contaminants in food chains of arctic ungulates and lessons learned from the Chernobyl accident; and ecosystem level relationships of the Porcupine Caribou Herd.

Community perceptions of wildlife management strategies and subsistence poaching in the Okavango Delta, Botswana

2020 ◽  
Vol 25 (3) ◽  
pp. 232-249 ◽  
Author(s):  
Ikanyeng Gaodirelwe ◽  
Moseki Ronald Motsholapheko ◽  
Gaseitsiwe Smollie Masunga
Keyword(s):  
Wildlife Management ◽  
Management Strategies ◽  
Okavango Delta ◽  
Community Perceptions

Cultivation techniques and nutrient management strategies to improve productivity of rain-fed maize in semi-arid regions

2018 ◽  
Vol 210 ◽  
pp. 149-157 ◽  
Author(s):  
Chunxia Li ◽  
Yuyi Li ◽  
Youjun Li ◽  
Guozhan Fu
Keyword(s):  
Arid Regions ◽  
Nutrient Management ◽  
Management Strategies ◽  
Cultivation Techniques ◽  
Semi Arid

Contemporary Decision Methods for Agricultural, Environmental, and Resource Management and Policy

2019 ◽  
Vol 11 (1) ◽  
pp. 19-41 ◽  
Author(s):  
David R. Johnson ◽  
Nathan B. Geldner
Keyword(s):  
Resource Management ◽  
Management Strategies ◽  
Natural Resources Management ◽  
Top Down ◽  
Deep Uncertainty ◽  
Resources Management ◽  
Policy Responses ◽  
External Forcings ◽  
Decision Methods ◽  
Stakeholder Preferences

Traditional top-down methods for resource management ask first what future conditions will be, then identify the best action(s) to take in response to that prediction. Even when acknowledging uncertainty about the future, standard approaches ( a) characterize uncertainties probabilistically, then optimize objectives in expectation, and/or ( b) develop a small number of representative scenarios to explore variation in outcomes under different policy responses. This leaves planners vulnerable to surprise if future conditions diverge from predictions. In this review, we describe contemporary approaches to decision support that address deep uncertainty about future external forcings, system responses, and stakeholder preferences for different outcomes. Many of these methods are motivated by climate change adaptation, infra-structure planning, or natural resources management, and they provide dramatic improvements in the robustness of management strategies. We outline various methods conceptually and describe how they have been applied in a range of landmark real-world planning studies.

River-wetland interaction and carbon cycling in a semi-arid riverine system: the Okavango Delta, Botswana

2013 ◽  
Vol 114 (1-3) ◽  
pp. 359-380 ◽  
Author(s):  
Eric Akoko ◽  
Eliot A. Atekwana ◽  
Anna M. Cruse ◽  
Loago Molwalefhe ◽  
Wellington R. L. Masamba
Keyword(s):  
Carbon Cycling ◽  
Okavango Delta ◽  
Semi Arid
Sign in / Sign up

Export Citation Format

Share Document