Your search found 8 records
1 Drovandi, A.; Medina de Dias, R. E. I.; Zimmermann, M. 1997. The influence of algae growth on the rating curve of concrete lined canals. In IIMI; ILRI; INA–CRA; IHE; UNC. International seminar: Research Program on Irrigation Performance (RPIP), Mendoza, Argentina, 3-7 November 1997. Papers presented. [Vol.2]. 5p.
(Location: IWMI HQ Call no: IIMI 631.7.8 G000 IIM Record No: H021674)
(0.36 MB)
2 Power, M. E.; Stout, R. J.; Cushing, C. E.; Harper, P. P.; Hauer, F. R .; Matthews, W. J.; Moyle, P. B.; Statzner, B.; Wais De Badgen, I. R. 1988. Biotic and abiotic controls in river and stream communities. Journal of the North American Benthological Society, 7(4):456-479.
(Location: IWMI-HQ Call no: P 7775 Record No: H039859)
3 Helmuth, B. 2002. How do we measure the environment?: Linking intertidal thermal physiology and ecology through biophysics. Integrative and Comparative Biology, 42:837-845.
Climate change ; Ecosystems ; Environmental effects ; Invertebrates ; Body temperature ; Animals ; Algae ; Mussels / USA
(Location: IWMI HQ Call no: P 7835 Record No: H039937)
4 Engelhardt, K. A. M.; Ritchie, M. E. 2001. Effects of macrophyte species richness on wetland ecosystem functioning and services. Nature, 4116838):687-689.
(Location: IWMI HQ Call no: P 7848 Record No: H039951)
5 Rajapaksha, R. M. C. P. 2014. Soil biodiversity: microorganisms in soils of Sri Lanka. Bttaramulla, Sri Lanka: Biodiversity Secretraiat. Ministry of Environment & Renewable Energy. 70p.
Biodiversity conservation ; Biotechnology ; Soil microorganisms ; Soil properties ; Soil genesis ; Prokaryotae ; Fungi ; Algae ; Microbial flora ; Organic compounds ; Pollutants ; Biological control ; Plant pathologists ; Habitats ; Forest ecosystems ; Wetlands ; Biosensors ; Food crops / Sri Lanka
(Location: IWMI HQ Call no: 333.9516 G744 BIO Record No: H047221)
6 Nava, V.; Leoni, B. 2021. A critical review of interactions between microplastics, microalgae and aquatic ecosystem function. Water Research, 188:116476. [doi: https://doi.org/10.1016/j.watres.2020.116476]
Microplastics ; Algae ; Aquatic ecosystems ; Phytoplankton ; Cyanobacteria ; Environmental factors ; Aquatic environment ; Biofouling ; Plastics ; Seasonal variation
(Location: IWMI HQ Call no: e-copy only Record No: H050110)
(0.68 MB)
With the widespread occurrence of microplastics in aquatic ecosystems having been firmly established, the focus of research has shifted towards the assessments of their influence on ecosystem functions and food webs. This includes interactions between microplastics and microalgae, as fundamental components at the base of aquatic food webs and pivotal organisms in a wide range of ecosystem functions. In this review, we present the current state of knowledge on microalgae–microplastic interactions and summarize the potential effect on their respective fate. Microplastics can and do interact with microalgae and the available literature has suggested that the epiplastic community of microalgae differs consistently from the surrounding aquatic communities; however, it is still not clear whether this different colonization is linked to the composition of the surface or more to the availability of a “hard” substrate on which organisms can attach and grow. Further studies are needed to understand to what extent the properties of different plastic materials and different environmental factors may affect the growth of microalgae on plastic debris. Biofouling may alter microplastic properties, especially increasing their density, consequently affecting the vertical fluxes of plastics. Moreover, microplastics may have toxic effects on microalgae, which could be physical or related to chemical interactions with plasticizers or other chemicals associated with plastics, with consequences for algal growth, photosynthetic activity, and morphology. Microplastics seems to have the potential to affect not only the quality (e.g., fatty acids and lipids composition, food dilution effect) but also the quantity of algal production, both positively and negatively. This may have consequences for energy fluxes, which may propagate throughout the whole food web and alter aquatic productivity. Even though experimental results have indicated reciprocal impacts between plastics and microalgae, it is currently difficult to predict how these impacts may manifest themselves at the ecosystem level. Therefore, further studies are needed to address this important topic.
7 Satterthwaite, E. V.; Bax, N. J.; Miloslavich, P.; Ratnarajah, L.; Canonico, G.; Dunn, D.; Simmons, S. E.; Carini, R. J.; Evans, K.; Allain, V.; Appeltans, W.; Batten, S.; Benedetti-Cecchi, L.; Bernard, A. T. F.; Bristol, S.; Benson, A.; Buttigieg, P. L.; Gerhardinger, L. C.; Chiba, S.; Davies, T. E.; Duffy, J. E.; Giron-Nava, A.; Hsu, A. J.; Kraberg, A. C.; Kudela, R. M.; Lear, D.; Montes, E.; Muller-Karger, F. E.; O’Brien, T. D.; Obura, D.; Provoost, P.; Pruckner, S.; Rebelo, Lisa-Maria; Selig, E. R.; Kjesbu, O. S.; Starger, C.; Stuart-Smith, R. D.; Vierros, M.; Waller, J.; Weatherdon, L. V.; Wellman, T. P.; Zivian, A. 2021. Establishing the foundation for the global observing system for marine life. Frontiers in Marine Science, 8:737416. [doi: https://doi.org/10.3389/fmars.2021.737416]
Marine ecosystems ; Global observing systems ; Ocean observations ; Biodiversity ; Time series analysis ; Environmental monitoring ; Sustainability ; Climate change ; Coastal zones ; Mangroves ; Sea grasses ; Corals ; Algae ; Data management ; Metadata standard ; Datasets ; Best practices ; Access to information ; Spatial analysis ; Funding ; Capacity development ; Technology transfer ; Developing countries
(Location: IWMI HQ Call no: e-copy only Record No: H050793)
https://www.frontiersin.org/articles/10.3389/fmars.2021.737416/pdf
https://vlibrary.iwmi.org/pdf/H050793.pdf
https://vlibrary.iwmi.org/pdf/H050793.pdf
(3.69 MB) (3.69 MB)
Maintaining healthy, productive ecosystems in the face of pervasive and accelerating human impacts including climate change requires globally coordinated and sustained observations of marine biodiversity. Global coordination is predicated on an understanding of the scope and capacity of existing monitoring programs, and the extent to which they use standardized, interoperable practices for data management. Global coordination also requires identification of gaps in spatial and ecosystem coverage, and how these gaps correspond to management priorities and information needs. We undertook such an assessment by conducting an audit and gap analysis from global databases and structured surveys of experts. Of 371 survey respondents, 203 active, long-term (>5 years) observing programs systematically sampled marine life. These programs spanned about 7% of the ocean surface area, mostly concentrated in coastal regions of the United States, Canada, Europe, and Australia. Seagrasses, mangroves, hard corals, and macroalgae were sampled in 6% of the entire global coastal zone. Two-thirds of all observing programs offered accessible data, but methods and conditions for access were highly variable. Our assessment indicates that the global observing system is largely uncoordinated which results in a failure to deliver critical information required for informed decision-making such as, status and trends, for the conservation and sustainability of marine ecosystems and provision of ecosystem services. Based on our study, we suggest four key steps that can increase the sustainability, connectivity and spatial coverage of biological Essential Ocean Variables in the global ocean: (1) sustaining existing observing programs and encouraging coordination among these; (2) continuing to strive for data strategies that follow FAIR principles (findable, accessible, interoperable, and reusable); (3) utilizing existing ocean observing platforms and enhancing support to expand observing along coasts of developing countries, in deep ocean basins, and near the poles; and (4) targeting capacity building efforts. Following these suggestions could help create a coordinated marine biodiversity observing system enabling ecological forecasting and better planning for a sustainable use of ocean resources.
8 Chitata, T.; Kemerink-Seyoum, J.; Cleaver, F. 2022. 'Our humanism cannot be captured in the bylaws': how moral ecological rationalities and care shape a smallholder irrigation scheme in Zimbabwe. Environment and Planning E: Nature and Space, 20p. (Online first) [doi: https://doi.org/10.1177/25148486221137968]
Irrigation schemes ; Smallholders ; Irrigation management ; Natural resources ; Institutions ; Ecological factors ; Infrastructure ; Groundwater ; Algae ; Farmers ; Social aspects ; Communities / Zimbabwe / Rufaro Irrigation Scheme
(Location: IWMI HQ Call no: e-copy only Record No: H051536)
https://journals.sagepub.com/doi/epdf/10.1177/25148486221137968
https://vlibrary.iwmi.org/pdf/H051536.pdf
https://vlibrary.iwmi.org/pdf/H051536.pdf
(0.60 MB) (612 KB)
In this article, we bring concepts of institutional bricolage, moral ecological rationalities and care into engagement, to explain the everyday management of an irrigation scheme in Zimbabwe. In doing this we: (a) emphasise the constant processes of bricolage through which irrigators adapt to changing circumstances and dynamically enact irrigation management; (b) illustrate some of the key features of the contemporary, hybridised moral-ecological rationalities that shape these processes of bricolage; (c) show how motivations to care (for people, the environment and infrastructure) as well as to control shape the bricolaged management arrangements. Through this approach, we aim to contribute to expanding ways of thinking about rationalities, including those that express the aspiration to live well together with human and non-human others, including water and infrastructure. The focus on moral-ecological rationalities is central to our contribution to critical water studies. This sheds light on actual practices of governing water and relationships between society-water/people and the environment. In so doing it helps us to understand the possibilities of caring for natural resources.
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