scholarly journals Assessment of Stocking Activities on the Native Brown Trout Populations from Nestos River (Southern Balkans) Inferred by mtDNA RFLP and Sequencing Analyses

2021 ◽  
Vol 11 (19) ◽  
pp. 9034
Author(s):  
Ioannis A. Giantsis ◽  
Argyrios Sapounidis ◽  
Emmanouil Koutrakis ◽  
Apostolos P. Apostolidis

Alien fish introductions, conducted towards the ichthyofauna enhancement in local drainages, have been occasionally proved harmful for the indigenous freshwater fish populations. The present study was designed to assess the impact of stocking activities, carried out in the past decades with fingerlings originating from Acheloos river hatcheries, on the native trout (Salmo sp.) populations of Nestos River, Greece. Trout specimens collected from several tributaries of Nestos River and were analyzed by means of PCR-RFLP and sequencing targeting the mitochondrial ND5-ND6 genes and the entire control region, respectively. It should be mentioned that trouts from Acheloos mainly belong to the marmoratus mitochondrial DNA (mtDNA) lineage, while the autochthonous trouts from Nestos belong to the Adriatic lineage. Both methodologies demonstrated that most samples from the three tributaries located at the lower part of Nestos constitute offspring of the fingerlings transferred from Acheloos hatcheries. Therefore, these tributaries have been strongly affected by stocking activities with a potential complete loss of their autochthonous trout. On the other hand, it seems that trout populations from higher altitude tributaries have not been affected by stockings. Hence, efforts should be undertaken in order to prevent the prevalence of the non-indigenous translocated Salmo in higher altitude tributaries, in conjunction with a management plan designed for the total trout populations from the area, speaking of which it has been recently included to the National Park of Rodopi Mountains.

Groupwork ◽  
2021 ◽  
Vol 29 (3) ◽  
pp. 96-102
Author(s):  
Paul Johnson

In June 2018, I was fortunate enough to attend and present at the IASWG Symposium at Kruger National Park in South Africa. It was a truly amazing experience. However, in July of 2019  I was once again able to return to the  African continent. This time to visit Zimbabwe. For the past four years, my friend and School Principal Chris Labbe,  had been visiting and working with the  IMVELO organization to raise funds for the following three schools:  Ngamo Primary School, Mlevu Primary School and St Joseph’s Primary School.These three schools are located in the indigenous and rural rural villages of Hwanga  National Park.  During the course of the visits to these three Schools, my wife Peg McGovern and I were able to observe the incredible work that was being done between IMVELO and the local communities. The overarching theme of the IASWG 2018 symposium had been “Groupwork in Communities.” On my visit to Hwanga,  I witnessed the impact  of Groupwork in these indigenous and rural communities. On my return home, I reviewed the Groupwork literature, and it reinforced what I observed and encountered  in Zimbabwe.  The wonderful sense of community, sustainability, cooperation, integration of programs, social action and empowerment. It truly was an amazing experience and a trip of a lifetime.


1985 ◽  
Vol 25 (1) ◽  
pp. 311
Author(s):  
W.H. Butler

The Australian petroleum industry has been involved in environmental planning and has developed an awareness of multiple land use over the past twentyfive years, more particularly over the past decade. This is in accord with the World Conservation Strategy and the National Conservation Strategy for Australia upon which the Australian State and Territory conservation strategies are based.As the term implies, multiple land use means a sharing of the land. The range of uses includes reserves, heritage areas, agriculture, urban and suburban development and mining. To achieve multiple land use requires the restoration of the environment to its pre-development state as quickly as possible so that both uses can be maintained. This requires that the new user assess the impact of his development well before it begins. This assessment is normally achieved through an Environmental Impact Statement (EIS) or Environmental Review and Management Plan (ERMP). Most operators are familiar with these requirements.This paper deals primarily with the restoration of the existing environment. Restoration is achieved by preserving, to the greatest extent possible, the vegetation and topsoil which are stripped from the development area. As little stockpiling as possible is done and the topsoil, mixed with the broken down vegetation, is returned as quickly as possible. In this way the contained seed load and nutrient values are not lost and regeneration results.Apart from the practical aspects there is a need for the workforce involved to understand what they are conserving and why they are conserving it. A delicate balance exists in nature wherein the surviving plants and animals are able to cope with natural disasters. Management plans must include the principle that the collective impact of a new development will at no time exceed the impact of natural catastrophes.


2016 ◽  
Vol 2016 ◽  
pp. 1-10 ◽  
Author(s):  
Geofrey E. Soka ◽  
Mark E. Ritchie

Arbuscular mycorrhizal fungi (AMF) can be important mutualists to plant hosts in acquiring soil nutrients. Past work has not explored whether previous land-cover history influences current AMF abundance in croplands and whether different land-cover histories in grazed but not cultivated areas influence AMF. This study was conducted to assess the effects of land-cover history in and near Serengeti National Park on AMF abundance in areas with three different land uses. The results showed that land-cover history influenced a number of soil physicochemical properties following conversion of grassland to cropland or woodland to cropland during the past 27 years. Different original land cover generally did not significantly influence current AMF abundance in croplands or livestock-grazed soils. However, livestock-grazed current grasslands that were formerly woodlands had lower AMF abundance than sites that had been grasslands since 1984. These results suggest that lower AMF abundance in livestock-grazed and cropland areas as compared to protected wildlife-grazed areas may reflect reduced total carbon inputs and higher disturbance and are not strongly influenced by the legacy of previous land cover. Given that recent studies have detected legacy effects on AMF, such effects may reflect more the impact on the taxonomic composition of AMF rather than their total abundance.


Koedoe ◽  
1999 ◽  
Vol 42 (1) ◽  
Author(s):  
H.C. Biggs ◽  
A.L.F. Potgieter

New developments in fire management policy in the Kruger National Park are sketched against the background of changing attitudes towards ecosystem management. The experimental burning plots established in the mid-1950s are discussed briefly, as is the almost forty-year era of rotational block- burning. The lightning-driven fire policy initiated in 1992 and currently aimed at by park management is discussed, with comments on its early performance. More recent revision of the management plan stressed maximisation of appropriate research benefits from the experimental burning plots, con- doned the lightning approach for the present, but stressed the absolute necessity of the park not finding itself in the 1992 position again, where a major change in policy has to be made with no comparative evidence from other systems. To this end, a major landscape-scale fire management trial has been planned for implementation starting in April 2000. It is sheduled to run over a twenty-year period, and will be placed at four localities representing different major landscapes in the park. It will compare the effects of three different fire systems (lightning, patch mosaic, and range condition burning systems) on biodiversity elements crucial to the park's mission. The rationale for, layout of, and criteria for deciding on the outcome of the trial are discussed, as well as the trade-offs that were made to enable the trial to be of such a large scale and still fit into overall park planning. The impact of the trial on the park's monitoring programme is discussed.


2020 ◽  
Vol 66 (No. 4) ◽  
pp. 170-184
Author(s):  
Ali Ghomi-Avili ◽  
Moslem Akbarinia ◽  
Seyed Mohsen Hosseini ◽  
Mohammad-Hasan Talebian ◽  
Hannes Dieter Knapp

Over the past four decades, management plan based on the Boolean Ecological Capability model has caused major problems in the management of the Hyrcanian Forests. The aim of this study is to evaluate ecological capability of five proposed sites including Golestan National Park, Afra Takhteh Yew Forest, Kojoor Forest, Cypress Woodland of Hassanabad-e Chalous, Lomer forest along the Hyrcanian region from east to west, using both Boolean and fuzzy logic and to compare these two models. A total of 10 important factors including slope, aspect, elevation, soil types, soil erosion, soil transformation, canopy cover, the value of species, distance to streams and climate were investigated in this study. The results show that elevation, slope and aspect have the most important role in the classification of the studied area. The results of model validation with field data indicate that the fuzzy gamma model shows the better assessment, accuracy and reliability compared to the Boolean model. Based on the obtained results we suggest the fuzzy-based operation model in sustainable protection planning in the Hyrcanian Forests.


2019 ◽  
Vol 11 (14) ◽  
pp. 14908-14911
Author(s):  
Koushik Sadhukhan ◽  
Ramesh Chatragadda ◽  
T. Shanmugaraj ◽  
M.V. Ramana Murthy

Coral Reefs in Gulf of Mannar is degrading with fatser rate due to several environmental stress over the past few decades. Under this severe degredation phase, our work has observed significant coral recruitment at Hare Island and Manoli & Manoliputti Island of Gulf of Mannar. Occurrenc of new recruitment of corals increseas the live coral cover percentage upto 58.4% and 51.5% in both Islands respectively. The findings reported here that increased percentage of coral cover brings a new hope for the researcher to find out the possible driving forces to the successful post larval settlement and survival of the new recruits which results in better conservation and management plan for the coral reefs of GoM Marine National Park.    


2021 ◽  
Vol 9 ◽  
Author(s):  
Elena Tricarico ◽  
Paola Ciampelli ◽  
Laura De Cicco ◽  
Sandro Aurelio Marsella ◽  
Lorenzo Petralia ◽  
...  

The white-clawed crayfish Austropotamobius pallipes complex populations are decreasing in the Foreste Casentinesi, Monte Falterona and Campigna National Park (Central Italy), due to several factors, including illegal poaching, predatory fishes, drought, and invasive alien species. Recently, the Northern raccoon Procyon lotor has been reported to be present in the area of the National Park and has started to predate on the white-clawed crayfish. The aim of the study was to update the distribution and population status of A. pallipes in the reserves, other sites of the National Park, and surrounding areas to assess the potential effects of the raccoon. Crayfish were sampled by hand or by traps in 14 sites; sampled individuals were sexed and measured. Signs of raccoon presence (e.g., footprints and predated crayfish) were also recorded. Our study confirms the impact of raccoon on native crayfish: indeed, where the invasive mammal is present (six sites), crayfish disappeared, or their populations have been dramatically reduced in number, with a size distribution skewed towards juveniles. In two sites, close to urban settlements, fresh footprints of P. lotor and predated specimens of A. pallipes were also observed. Populations of crayfish are still abundant or even increasing as compared with samplings conducted in the past where raccoon is absent (five sites). Urgent actions (e.g., control of raccoons, and monitoring and restocking of A. pallipes populations if feasible and where possible) should be taken into account to guarantee the survival of this protected species.


2021 ◽  
pp. 52-77
Author(s):  
Christian Lund

This chapter evaluates the impact of the declaration of Mount Halimun-Salak as a national park by the Indonesian government on the property and citizenship of the local population. It analyzes government–citizen encounters in West Java and the dynamics of recognition in the fields of government territorialization, taxation, local organization, and identity politics. If direct claims to resources were impossible to pursue, people would instead lodge indirect claims. In everyday situations, indirect recognition can perform important legal and political work. After the authoritarian New Order regime, in particular, claims to citizenship worked as indirect property claims and as pragmatic proxies for formal property rights. The chapter examines how people struggle over the past, negotiating the constraints of social propriety for legitimation and indirect recognition of their claims.


Author(s):  
Charles Olmsted ◽  
Javier Perez

The research underway has three principal objectives. The first of these is to expand the knowledge of the existing vegetation of the site. The site has almost quadrupled in size (to 836 acres) and only portions of the original site have been investigated (Davis, 1959; Johnson, 1978). The second objective is to develop an understanding of the historic vegetation of the area. National Park Service (NPS) plans for the interpretation of the site call for an historic time frame of the 1870's but the diverse uses of the property over the past century have created vegetation distributions that are not congruent with that time period. The third objective is to develop a vegetation management plan for the site that will convert the existing vegetation into an approximation of the historical vegetation and provide guidelines for maintaining that appearance.


2004 ◽  
Vol 80 (4) ◽  
pp. 469-472
Author(s):  
Rémi Hébert

Permanent sampling plots in experimental forests have generated large quantities of data over the past decades. Methods used to collect certain of these data have often varied over the course of the sampling. The objective of this study was to develop a process to evaluate sampling differences in historical forest data. The proposed approach is to: (1) examine available data and seek out the missing ones in archives of the concerned organizations; (2) regroup data by inventory periods; (3) search for the sampling methodology in each of the different inventory periods; and (4) evaluate the impact of differences in methodology on data continuity. When using this approach on the historical data of the Lake Edward experimental forest, we were able to better define the strengths and the weaknesses of the database. Key words: forest inventories, La Mauricie National Park, permanent sample plots, regeneration inventories


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