scholarly journals The importance of riparian forests and tree plantations for the occurrence of the European Turtle Dove Streptopelia turtur in an intensively cultivated agroecosystem

2020 ◽  
pp. 1-15
Author(s):  
GIANPASQUALE CHIATANTE ◽  
ZENO PORRO ◽  
ALBERTO MERIGGI
Keyword(s):  
Tree Cover ◽  
Tree Plantations ◽  
Rapid Decline ◽  
Cluster Sampling ◽  
Theoretic Approach ◽  
Natural Forests ◽  
Farmland Birds ◽  
Selection Probability ◽  
Turtle Dove ◽  
Streptopelia Turtur

Summary Farmland birds represent a large proportion of European avifauna, and the populations of several species have suffered a dramatic decline in recent decades. Among these species, the European Turtle Dove Streptopelia turtur has undergone rapid decline in much of its European range. Therefore, the main aims of this research are to estimate the population density of the Turtle Dove and to investigate its habitat use at home range scale in an intensively cultivated agroecosystem in northern Italy. In the 2015 breeding season we carried out turtle dove counts from 372 point-counts, randomly allocated following a stratified cluster sampling design. The density was estimated by distance sampling, whereas the habitat suitability was assessed by Resource Selection Probability Function. In particular, we followed a presence vs availability approach, using binary logistic regression and the Information-Theoretic approach. During fieldwork, 76 observations of Turtle Dove were collected and a density of 5.0 pairs/km2 was estimated. The Turtle Dove inhabits areas with high tree cover, either semi-natural forests or tree plantations, as well as areas with many shrubs and hedgerows. On the other hand, areas with a high proportion of crops, such as paddyfields, maize, and winter cereals are avoided. For the species’ conservation, it is necessary to maintain a combination of habitat features with suitable nesting and feeding areas, as the degradation of either of these may reduce Turtle Dove populations.

scholarly journals Natural forests loss and tree plantations: large-scale tree cover loss differentiation in a threatened biodiversity hotspot

2020 ◽  
Vol 15 (12) ◽  
pp. 124055
Author(s):  
Adison Altamirano ◽  
Alejandro Miranda ◽  
Paul Aplin ◽  
Jaime Carrasco ◽  
Germán Catalán ◽  
...  
Keyword(s):  
Large Scale ◽  
Biodiversity Hotspot ◽  
Tree Cover ◽  
Tree Plantations ◽  
Natural Forests ◽  
Loss Differentiation

scholarly journals Effects of seed-rich habitat provision on territory density, home range and breeding performance of European Turtle Doves Streptopelia turtur

2020 ◽  
pp. 1-20
Author(s):  
JENNY C. DUNN ◽  
ANTONY J. MORRIS ◽  
PHILIP V. GRICE ◽  
WILL J. PEACH
Keyword(s):  
Reproductive Output ◽  
Food Limitation ◽  
Home Ranges ◽  
Breeding Performance ◽  
Ranging Behaviour ◽  
Local Abundance ◽  
Turtle Dove ◽  
Human Habitation ◽  
Territory Density ◽  
Streptopelia Turtur

Summary Conservation measures providing food-rich habitats through agri-environment schemes (AES) have the potential to affect the demography and local abundance of species limited by food availability. The European Turtle Dove Streptopelia turtur is one of Europe’s fastest declining birds, with breeding season dietary changes coincident with a reduction in reproductive output suggesting food limitation during breeding. In this study we provided seed-rich habitats at six intervention sites over a 4-year period and tested for impacts of the intervention on breeding success, ranging behaviour and the local abundance of territorial turtle doves. Nesting success and chick biometrics were unrelated to the local availability of seed-rich habitat or to the proximity of intervention plots. Nestling weight was higher close to human habitation consistent with an influence of anthropogenic supplementary food provision. Small home ranges were associated with a high proportion of non-farmed habitats, while large home ranges were more likely to contain seed-rich habitat suggesting that breeding doves were willing to travel further to utilize such habitat where available. Extensively managed grassland and intervention plot fields were selected by foraging turtle doves. A slower temporal decline in the abundance of breeding males on intervention sites probably reflects enhanced habitat suitability during territory settlement. Refining techniques to deliver sources of sown, natural, and supplementary seed that are plentiful, accessible, and parasite-free is likely to be crucial for the conservation of turtle doves.

THE FEEDING HABITS OF THE WOODPIGEON COLUMBA PALUMBUS, STOCK DOVE C. OENAS AND TURTLE DOVE STREPTOPELIA TURTUR

Ibis ◽  
2008 ◽  
Vol 106 (2) ◽  
pp. 174-188 ◽  
Author(s):  
R. K. Murton ◽  
N. J. Westwood ◽  
A. J. Isaacson
Keyword(s):  
Feeding Habits ◽  
Turtle Dove ◽  
Streptopelia Turtur

scholarly journals Low effect on open-farmland birds of young afforestations in heterogeneous Mediterranean croplands

2014 ◽  
Author(s):  
Juan S. Sánchez-Oliver ◽  
José M. Rey Benayas ◽  
Luis M. L.M. Carrascal
Keyword(s):  
Species Richness ◽  
Bird Species ◽  
Agricultural Landscapes ◽  
Tree Plantations ◽  
Conservation Value ◽  
Farmland Birds ◽  
Negative Effects ◽  
Bird Species Richness ◽  
Positive Effects ◽  
The One

Afforestation programs such as the one promoted by the EU Common Agricultural Policy have spread tree plantations on former cropland. These afforestations attract generalist forest and ubiquitous species but may cause severe damage to open habitat species, especially birds of high conservation value. We investigated the effects of young (< 20 yr) tree plantations dominated by pine P. halepensis on bird communities inhabiting the adjacent open farmland habitat in central Spain. We hypothesize that pine plantations with larger surface, and areas at shorter distances from plantations, would result in lower bird species richness and conservation value of open farmland birds. Regression models controlling for the influence of land use types around plantations revealed significant positive effects of distance to pine plantation edge on community species richness in winter, and negative effects on an index of conservation concern (SPEC) during the breeding season. However, plantation area did not have any effect on species richness or community conservation value. Our results indicate that pine afforestation of Mediterranean cropland in heterogeneous agricultural landscapes has an overall low detrimental effect on bird species that are characteristic of open farmland habitat.

Bird beta-diversity of tree plantations and natural forests immersed within a grassy landscape in southern Brazil

2021 ◽  
Author(s):  
Angelo Marcon Pezda ◽  
Lucilene Inês Jacoboski ◽  
André Luís Luza ◽  
Sandra Maria Hartz
Keyword(s):  
Beta Diversity ◽  
Tree Plantations ◽  
Southern Brazil ◽  
Natural Forests

Distribution of the European turtle dove (Streptopelia turtur) at the edge of the South-Western Palaearctic: transboundary differences and conservation prospects

2020 ◽  
Vol 66 (5) ◽  
Author(s):  
José Luis Tellería ◽  
Roberto Carbonell ◽  
Guillermo Fandos ◽  
Elena Tena ◽  
Alejandro Onrubia ◽  
...  
Keyword(s):  
The South ◽  
Turtle Dove ◽  
Western Palaearctic ◽  
Streptopelia Turtur

Estimating carbon losses from disturbances in tropical moist forests (deforestation and forest degradation) since 2011

2020 ◽  
Author(s):  
Frederic Achard ◽  
Christelle Vancutsem ◽  
Valerio Avitabile ◽  
Andreas Langner
Keyword(s):  
Forest Cover ◽  
Moving Average ◽  
Forest Degradation ◽  
Tree Cover ◽  
Accurate Information ◽  
Natural Forests ◽  
Carbon Loss ◽  
Average Value ◽  
Large Trees ◽  
Carbon Losses

&lt;p&gt;The need for accurate information to characterize the evolution of forest cover at the tropical scale is widely recognized, particularly to assess carbon losses from processes of disturbances such as deforestation and forest degradation&lt;sup&gt;1&lt;/sup&gt;. In fact, the contribution of degradation is a key element for REDD+ activities and is presently mostly ignored in national reporting due to the lack of reliable information at such scale.&lt;br&gt;Recently Vancutsem et al.&lt;sup&gt;2&lt;/sup&gt; produced a dataset at 30m resolution which delineates the tropical moist forest (TMF) cover changes from 1990 to 2019. The use of the Landsat historical time-series at high temporal and spatial resolution allows accurate monitoring of deforestation and degradation, from which the carbon losses from disturbances in TMFs can be estimated. A degradation event is defined here as temporary absence of tree cover (visible within a Landsat pixel during a maximum of three years duration) and includes impacts of fires and logging activities.&lt;br&gt;We quantify the annual losses in above-ground carbon stock associated to degradation and deforestation in TMF over the period 2011-2019 by combining the annual disturbances in forest cover derived from the Landsat archive the pan-tropical map of aboveground live woody biomass density (AGB) from Santoro et al.&lt;sup&gt;3&lt;/sup&gt; at 100 m. To reduce the local variability within the estimation of AGB values, we apply a moving average filter under the TMF cover for the year 2010.&amp;#160;&lt;br&gt;The carbon loss due to degradation is accounted as full carbon loss within a pixel (like a deforestation). The reason is that logging activities usually remove large trees with higher biomass densities than the average value of the disturbed pixel indicated by the pan-tropical maps. To avoid double counting of carbon removal, deforestation happening after degradation is not accounted as carbon loss.&lt;br&gt;Our results are compared with estimates of previous studies that cover different periods and forest domains: (i) Tyukavina et al.&lt;sup&gt;4&lt;/sup&gt;&amp;#160;provide estimates of carbon loss from deforestation for the period 2000-2012 for all forests (evergreen and deciduous) discriminating natural forests from managed forests, and (ii) Baccini et al.&lt;sup&gt;5 &lt;/sup&gt;provide estimates of carbon loss from deforestation and degradation for the period 2003-2014 for both evergreen and deciduous forests.&lt;/p&gt;&lt;p&gt;In a further step, we will analyze the sensitivity of the results to the input AGB values by applying the same approach to other AGB maps (e.g. Baccini et al. 2012&lt;sup&gt;6&lt;/sup&gt;).&lt;br&gt;Finally we intend to use Sentinel-2 data (10 m) for monitoring the location and extent of logging activities and burnt areas and further improve the estimates of carbon losses from forest degradation.&amp;#160;&lt;/p&gt;&lt;p&gt;1. Achard F, House JI 2015 doi 10.1088/1748-9326/10/10/101002&lt;br&gt;2. Vancutsem C. et al. 2019 Submitted to Nat. Geoscience&lt;br&gt;3. Santoro M et al. 2018 doi 10.1594/PANGAEA.894711&lt;br&gt;4. Tuykavina A et al 2018 http://iopscience.iop.org/1748-9326/10/7/074002&lt;br&gt;5. Baccini A et al. 2017 doi 10.1126/science.aam5962&lt;br&gt;6. Baccini A et al. 2012 doi 10.1038/nclimate1354&lt;/p&gt;

Increasing tree cover while losing diverse natural forests in tropical Hainan, China

2013 ◽  
Vol 14 (2) ◽  
pp. 611-621 ◽  
Author(s):  
De-Li Zhai ◽  
Jian-Chu Xu ◽  
Zhi-Cong Dai ◽  
Charles H. Cannon ◽  
R. E. Grumbine
Keyword(s):  
Tree Cover ◽  
Natural Forests

Understory vegetation of boreal tree plantations: Differences in relation to previous land use and natural forests

2007 ◽  
Vol 242 (1) ◽  
pp. 49-57 ◽  
Author(s):  
Sophie Gachet ◽  
Alain Leduc ◽  
Yves Bergeron ◽  
Thuy Nguyen-Xuan ◽  
Francine Tremblay
Keyword(s):  
Land Use ◽  
Understory Vegetation ◽  
Tree Plantations ◽  
Natural Forests

Increased grazing and dominance of an exotic pasture (Bothriochloa pertusa) affects vertebrate fauna species composition, abundance and habitat in savanna woodland

2011 ◽  
Vol 33 (1) ◽  
pp. 49 ◽  
Author(s):  
Alex S. Kutt ◽  
Alaric Fisher
Keyword(s):  
Species Composition ◽  
Bird Species ◽  
Information Criteria ◽  
Tree Cover ◽  
Theoretic Approach ◽  
Pasture Grass ◽  
Bird Abundance ◽  
Vertebrate Fauna ◽  
Species Response ◽  
Information Theoretic Approach

The invasion of exotic pasture species into intact woodlands has the potential to affect native fauna by altering habitat structure and ecosystem function. The spread of these weeds is generally in concert with cattle grazing, so that fauna or habitat change is due to multiple interrelated causes. In this study we investigated whether the spread of the introduced pasture grass Bothriochloa pertusa and replacement of the native bluegrass B. ewartiana in eucalypt woodlands of northern Queensland has had an effect on terrestrial vertebrate fauna. We located 40 sites that sampled a range of native and introduced pastures cover, and investigated the spatial pattern of abundance with canonical analysis of principle coordinates, and correlation of the habitat attributes on the ordination space. We then selected a subset of four habitat attributes (eliminating highly colinear variables) and modelled species response to each using an information-theoretic approach. Thirty-one species (26 birds, one mammal and four reptiles) and two summary variables (bird abundance and richness) had best subset Akaike Information Criteria models with reliable parameters estimates. Seventeen models contained the B. pertusa frequency term and a further 16 had a term relating to upper storey cover (tree cover >10, 5–10 or 3–5 m). Though pasture grass cover, grazing and habitat features were correlated and thus we cannot ascribe B. pertusa as the sole determinant of fauna species change, this study has demonstrated that tropical savanna woodlands with changing Bothriochloa dominance from native to introduced species have different fauna species composition. In particular bird species richness, ground nesting species (e.g. rufous songlark Cincloramphus mathewsi, golden-headed cisticola Cisticola exilis) and terrestrial reptiles (e.g. Carlia munda and Ctenotus taeniolatus) declined. Disturbance-tolerant species such as Australian magpie Cracticus tibicen and yellow-throated miners Manorina flavigula increased in abundance in exotic pasture-dominated sites. As pastoral intensification continues in northern Australian rangelands there is a potential for significant change in the relative abundance and composition of vertebrate fauna and the reduction or loss of some species in the landscape.

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