Different components of landscape complexity are necessary to preserve multiple taxonomic groups in intensively-managed rice paddy landscapes

2022 ◽  
Vol 328 ◽  
pp. 107864
Author(s):  
Pierre Mallet ◽  
Arnaud Béchet ◽  
Thomas Galewski ◽  
François Mesléard ◽  
Samuel Hilaire ◽  
...  
Keyword(s):  
Rice Paddy ◽  
Landscape Complexity ◽  
Intensively Managed ◽  
Taxonomic Groups

scholarly journals Biodiversity conservation in agriculture requires a multi-scale approach

2014 ◽  
Vol 281 (1791) ◽  
pp. 20141358 ◽  
Author(s):  
David J. Gonthier ◽  
Katherine K. Ennis ◽  
Serge Farinas ◽  
Hsun-Yi Hsieh ◽  
Aaron L. Iverson ◽  
...  
Keyword(s):  
Biodiversity Conservation ◽  
Agricultural Land ◽  
Multiple Scales ◽  
Management Strategies ◽  
Biodiversity Loss ◽  
Conservation Strategies ◽  
Local Management ◽  
Landscape Complexity ◽  
Multi Scale ◽  
Taxonomic Groups

Biodiversity loss—one of the most prominent forms of modern environmental change—has been heavily driven by terrestrial habitat loss and, in particular, the spread and intensification of agriculture. Expanding agricultural land-use has led to the search for strong conservation strategies, with some suggesting that biodiversity conservation in agriculture is best maximized by reducing local management intensity, such as fertilizer and pesticide application. Others highlight the importance of landscape-level approaches that incorporate natural or semi-natural areas in landscapes surrounding farms. Here, we show that both of these practices are valuable to the conservation of biodiversity, and that either local or landscape factors can be most crucial to conservation planning depending on which types of organisms one wishes to save. We performed a quantitative review of 266 observations taken from 31 studies that compared the impacts of localized (within farm) management strategies and landscape complexity (around farms) on the richness and abundance of plant, invertebrate and vertebrate species in agro-ecosystems. While both factors significantly impacted species richness, the richness of sessile plants increased with less-intensive local management, but did not significantly respond to landscape complexity. By contrast, the richness of mobile vertebrates increased with landscape complexity, but did not significantly increase with less-intensive local management. Invertebrate richness and abundance responded to both factors. Our analyses point to clear differences in how various groups of organisms respond to differing scales of management, and suggest that preservation of multiple taxonomic groups will require multiple scales of conservation.

Landscape complexity in space and time

2001 ◽  
Vol 2 (1) ◽  
pp. 109-119 ◽  
Author(s):  
D.J. Walker ◽  
N. C. Kenkel
Keyword(s):  
Landscape Complexity ◽  
Space And Time

Benthic community populations near two adjacent northern pulpmill discharges

1997 ◽  
Vol 35 (2-3) ◽  
pp. 381-388 ◽  
Author(s):  
G. P. Thomas ◽  
N. Munteanu
Keyword(s):  
Benthic Community ◽  
Ecological Model ◽  
Relative Proportion ◽  
Benthic Invertebrate ◽  
Treated Effluent ◽  
Spatial Confounding ◽  
Spatial Approach ◽  
Pulp And Paper Effluent ◽  
Taxonomic Groups ◽  
Benthic Invertebrate Communities

Benthic invertebrate communities were investigated as part of the federal Environmental Effects Monitoring programs conducted as required by the amended Pulp and Paper Effluent Regulations (PPER) of the federal Fisheries Act. A Refiner Mechanical (RMP) and larger Kraft pulpmill, both situated on a northern, BC reservoir, discharge secondary-treated effluent within 5 km of each other. Efforts to independently distinguish potential effects associated with these individual discharges were complicated by the proximity of the diffusers, their location within a complex ecological region of a reservoir, and the presence of temporal and spatial confounding influences. A comprehensive examination of the benthic community structure involved the combined assessment of several endpoints (total population numbers, relative proportion of taxonomic groups, and species richness). A tiered, spatial approach, based on a reservoir ecological model (Thornton et al., 1981), was adapted to assess and distinguish community structures and reservoir- and mill-related influences. Results suggested that effects associated with the two different mills could be distinguished based on subtle and distinct differences in benthic community profiles.

scholarly journals Where we Come from and where to Go: Six Decades of Botanical Studies in the Mediterranean Wetlands, with Sardinia (Italy) as a Case Study

Wetlands ◽  
2021 ◽  
Vol 41 (6) ◽  
Author(s):  
Alba Cuena-Lombraña ◽  
Mauro Fois ◽  
Annalena Cogoni ◽  
Gianluigi Bacchetta
Keyword(s):  
Vascular Plants ◽  
Vascular Plant ◽  
Regional Scale ◽  
Temporary Ponds ◽  
Evolutionary Strategies ◽  
Plant Groups ◽  
Research Themes ◽  
The Mediterranean ◽  
Taxonomic Groups ◽  
Water Saturated

AbstractPlants are key elements of wetlands due to their evolutionary strategies for coping with life in a water-saturated environment, providing the basis for supporting nearly all wetland biota and habitat structure for other taxonomic groups. Sardinia, the second largest island of the Mediterranean Basin, hosts a great variety of wetlands, of which 16 are included in eight Ramsar sites. The 119 hydro- and hygrophilous vascular plant taxa from Sardinia represent the 42.6% and 37.9% of the number estimated for Italy and Europe, respectively. Moreover, around 30% of Sardinia’s bryological flora, which is made up of 498 taxa, is present in temporary ponds. An overview at regional scale considering algae is not available, to our knowledge, even though several specific studies have contributed to their knowledge. In order to find the most investigated research themes and wetland types, identify knowledge gaps and suggest recommendations for further research, we present a first attempt to outline the work that has been hitherto done on plants in lentic habitats in Sardinia. Three plant groups (algae, bryophytes and vascular plants), and five research themes (conservation, ecology, inventory, palaeobotany and taxonomy) were considered. After a literature review, we retained 202 papers published from 1960 to 2019. We found that studies on vascular plants, as plant group, were disproportionately more numerous, and inventories and ecology were the most investigated research themes. Although efforts have recently been made to fill these long-lasting gaps, there is a need for updating the existing information through innovative methods and integrative approaches.

scholarly journals Annelid Diversity: Historical Overview and Future Perspectives

Diversity ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 129
Author(s):  
María Capa ◽  
Pat Hutchings
Keyword(s):  
State Of The Art ◽  
Molecular Taxonomy ◽  
Evolutionary Relationships ◽  
Diverse Group ◽  
Future Perspectives ◽  
Special Issue ◽  
Species Numbers ◽  
Species Complexes ◽  
Taxonomic Groups ◽  
A New Species

Annelida is a ubiquitous, common and diverse group of organisms, found in terrestrial, fresh waters and marine environments. Despite the large efforts put into resolving the evolutionary relationships of these and other Lophotrochozoa, and the delineation of the basal nodes within the group, these are still unanswered. Annelida holds an enormous diversity of forms and biological strategies alongside a large number of species, following Arthropoda, Mollusca, Vertebrata and perhaps Platyhelminthes, among the species most rich in phyla within Metazoa. The number of currently accepted annelid species changes rapidly when taxonomic groups are revised due to synonymies and descriptions of a new species. The group is also experiencing a recent increase in species numbers as a consequence of the use of molecular taxonomy methods, which allows the delineation of the entities within species complexes. This review aims at succinctly reviewing the state-of-the-art of annelid diversity and summarizing the main systematic revisions carried out in the group. Moreover, it should be considered as the introduction to the papers that form this Special Issue on Systematics and Biodiversity of Annelids.

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