scholarly journals Are they always bad? Assessing benefits of non-indigenous species in aquatic environment and their implications

2020 ◽  
Vol 45 (2) ◽  
pp. 75-86
Author(s):  
Muhammad Masrur Islami

Non-indigenous species (NIS), non-native, or alien species are any organisms living and spreading outside their natural habitat. Many of NIS spread to a new environment accidentally, while some other species are intentionally introduced by humans to a new habitat in many different pathways, as follows: 1) release; 2) escape; 3) contaminant; 4) stowaway; 5) corridor; and 6) unaided. Threaten native biodiversity may be the most problematic impact of NIS. They can also disrupt food-web organizations and affect the ecosystem structures. Additionally, the problem is exacerbated by disagreements regarding whether or not NIS should be permitted for aquaculture production. The likelihood of NIS escaping, being released from aquaculture, and establishing in its native habitat poses a significant threat to the ecosystem and biodiversity. NIS also have positive impacts as ecosystem engineers which may increase the biodiversity of native communities. Other benefits of NIS include providing an alternative food source and supporting fisheries and aquaculture sectors. Understanding the introduction process and the impacts of NIS should be supported by effective policy frameworks and management approaches, including risk assessment, prevention and control, pathway and vector management, early detection and rapid response, eradication, and mitigation and restoration. Furthermore, the crucial efforts would be raising public awareness, improving scientific research, and developing strategy regarding biosecurity issues as consequences of the emergence of interactions complexity among NIS and other global ecological change drivers.

Author(s):  
Roxana CICEOI ◽  
Vasilica LUCHIAN ◽  
Andrei Florin TABACU ◽  
Minodora GUTUE ◽  
Mala Maria STAVRESCU-BEDIVAN

In Europe, the goji crop is expanding rapidly, to satisfy the increased market demand for functional foods, with effects in chronic diseases treatment (cancer, diabetes, atherosclerosis, etc.). Romania has become in recent years one of the most important growers of goji berry, especially for organic production, as the species was quite resistant to main pests and diseases. Still, in 2008, a non-indigenous species of Eriophyid mites, called Aceria kuko, was identified on goji plants in UK and spread rapidly throughout the EU. The plant protection institutions took eradication measures, however the pest continued to spread in new plantations and recently on spontaneous plants. Based on GBIF, iNaturalist, personal observations and communication, the paper presents the current distribution of goji berry gall mite in Europe and in Romania and also suggests the use of new citizen science tool - ProtectGoji maps, that aims both to increase awareness of goji producers and consumers about this pest and to geolocate the species expansion in Romania for a better containment and control strategy.


2020 ◽  
Vol 21 (6) ◽  
pp. 2030
Author(s):  
Eva Cacabelos ◽  
Patrício Ramalhosa ◽  
João Canning-Clode ◽  
Jesús S. Troncoso ◽  
Celia Olabarria ◽  
...  

Microbial biofilms can be key mediators for settlement of macrofoulers. The present study examines the coupled effects of microbial biofilms and local environmental conditions on the composition, structure and functioning of macrofouling assemblages. Settlement of invertebrates over a gradient of human-impacted sites was investigated on local biofilms and on biofilms developed in marine protected areas (MPAs). Special attention was given to the presence of non-indigenous species (NIS), a global problem that can cause important impacts on local assemblages. In general, the formation of macrofouling assemblages was influenced by the identity of the biofilm. However, these relationships varied across levels of anthropogenic pressure, possibly influenced by environmental conditions and the propagule pressure locally available. While the NIS Watersipora subatra seemed to be inhibited by the biofilm developed in the MPA, Diplosoma cf. listerianum seemed to be attracted by biofilm developed in the MPA only under mid anthropogenic pressure. The obtained information is critical for marine environmental management, urgently needed for the establishment of prevention and control mechanisms to minimize the settlement of NIS and mitigate their threats.


2021 ◽  
Vol 9 ◽  
Author(s):  
Susie M. Grant ◽  
Cath L. Waller ◽  
Simon A. Morley ◽  
David K. A. Barnes ◽  
Madeleine J. Brasier ◽  
...  

Local drivers are human activities or processes that occur in specific locations, and cause physical or ecological change at the local or regional scale. Here, we consider marine and land-derived pollution, non-indigenous species, tourism and other human visits, exploitation of marine resources, recovery of marine mammals, and coastal change as a result of ice loss, in terms of their historic and current extent, and their interactions with the Southern Ocean environment. We summarise projected increases or decreases in the influence of local drivers, and projected changes to their geographic range, concluding that the influence of non-indigenous species, fishing, and the recovery of marine mammals are predicted to increase in the future across the Southern Ocean. Local drivers can be managed regionally, and we identify existing governance frameworks as part of the Antarctic Treaty System and other instruments which may be employed to mitigate or limit their impacts on Southern Ocean ecosystems.


Author(s):  
Henn Ojaveer ◽  
Jonne Kotta ◽  
Okko Outinen ◽  
Heli Einberg ◽  
Anastasija Zaiko ◽  
...  

Life ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 606
Author(s):  
Daria Sanna ◽  
Ilenia Azzena ◽  
Fabio Scarpa ◽  
Piero Cossu ◽  
Angela Pira ◽  
...  

In the fresh waters of Sardinia (Italy), the non-indigenous crayfish species Procambarus clarkii has been reported from 2005, but, starting from 2019, there have been several reports of a new non-indigenous crayfish in southern and central areas of this Mediterranean island, and its morphology suggests that this species may be the marbled crayfish Procambarus virginalis. Forty-seven individuals of this putative species were analyzed, using the mitochondrial gene Cytochrome c Oxidase subunit I as molecular marker to identify this crayfish and investigate the level of genetic variability within the recently established population. Phylogenetic and phylogeographic analyses were carried out on a dataset including sequences from the Sardinian individuals and from all congenerics available in GenBank. Results showed that the new Sardinian crayfish belong to the species P. virginalis. All the sequences belonging to P. virginalis from European countries are identical, with only few exceptions found among Sardinian individuals. In conclusion, this paper highlights the occurrence of a new further alien species in the Sardinian fresh waters, which are already characterized by the high presence of non-indigenous species.


Sci ◽  
2020 ◽  
Vol 2 (2) ◽  
pp. 28
Author(s):  
Prince Yeboah ◽  
Arnold Donkor Forkuo ◽  
Obed Kwabena Offe Amponsah ◽  
Nana Ofori Adomako ◽  
Ahmad Yaman Abdin ◽  
...  

Malaria is a serious infection affecting millions of people in Africa. Our study investigated the personal preferences and applications of antimalarial medicines in Ghana. Based on over 1000 questionnaires distributed in Ghana from January to May 2019, we noticed that although Western medications to fight this disease are widely available, most patients in Ghana prefer treatment with locally produced herbal remedies. This preference appears to be due to a combination of traditional venues for obtaining medicines “on the street” rather than in licensed pharmacies, trust in local and “green” products, extensive advertisement of such local products, and an inherent distrust of imported and synthetic or unnatural medicines. Going local and natural is a trend also observed in other countries across the globe, and adds to the acceptance or rejection of drugs regardless of their activity or toxicity. In fact, adverse side effects associated with herbal remedies, such as general weakness and swollen, sore mouth, do not seem to deter the respondents of this study in Ghana. We propose a combination of (a) increasing public awareness of the benefits of modern medicine and (b) an improvement and control of the quality of herbal remedies to raise the standard of malaria treatment in countries such as Ghana.


2021 ◽  
Vol 3 (4) ◽  
pp. 70-74
Author(s):  
Nurul Utami

Corona virus is a virus that attacks the respiratory system. The high incidence of Covid-19 is due to low public awareness of applying health protocols. So the need for prevention and control efforts by complying with health protocols to wear masks, keep your distance and wash your hands properly. Washing hands is an easy routine and is important in infection control, and is the best method to prevent the transmission of microorganisms. The purpose of this study was to determine the effect of nurse education on the accuracy of the patient's family through hand washing in preventing Covid-19 transmission at Arifin Achmad Hospital, Riau Province. This research uses quantitative research with a quasi experimental design, with a population of 20 people. Data collection tools used observation sheets and data analysis was carried out univariate and bivariate with the Wilcoxson test. The results of this study show that the average value before being given education about hand washing is low compared to the average value after being given education about hand washing. So that hand washing education is effective in increasing hand washing to prevent Covid-19 transmission with a p-value of 0.000. The results of this study are expected to be a source of information and knowledge for the nursing profession regarding the effect of providing nurse education on the accuracy of the patient's family in washing hands.


Sign in / Sign up

Export Citation Format

Share Document