scholarly journals Comparison of Nesting Features and Breeding Success of Turtle Dove Streptopelia turtur between Orchards and Riparian Habitats

2021 ◽  
Vol 2021 ◽  
pp. 1-7
Author(s):  
Ismail Mansouri ◽  
Wafae Squalli ◽  
Abdelbari El Agy ◽  
Abderahim El-Hassani ◽  
Lahcen El Ghadraoui ◽  
...  
Keyword(s):  
Breeding Success ◽  
Riparian Vegetation ◽  
Tree Height ◽  
Breeding Ecology ◽  
Apple Orchards ◽  
Riparian Trees ◽  
Nest Placement ◽  
Turtle Dove ◽  
The Difference ◽  
Streptopelia Turtur

The European turtle dove Streptopelia turtur breeds in both farmlands and woodlands, and it is important to explore the difference in breeding ecology of this threatened game in these two ecosystem types. This study, carried out during four years (2015–2018), compares nesting features of this species and its breeding success between apple orchards and riparian vegetation in Midelt Province, Morocco. The main result revealed that the nest placement, including nesting-tree height and nest height, is similar between orchards and riparian trees. However, the nest dimensions (big and small diameters) were larger in orchards. Correlations were variable among nest placement parameters and dimensions. On the contrary, in four breeding seasons, where 566 nests were monitored (467 in orchards and 99 in riparian sites), the average breeding success was different (57% of chicks in apple farms and 53% in riparian vegetation). Moreover, in apple orchards, clutches’ failure is due to both predation (18.89% of eggs and 10.54% of chicks) and temperature lowering (5.03% of unhatched eggs and 5.49% of dead chicks), while in riparian vegetation, the loss is due to nest desertion (21.33% of clutches) and mostly predation (33.16% of clutches).

scholarly journals Breeding Ecology and Nest- Site Selection of Turtle Doves (Streptopelia turtur) in Three New Orchard Habitats

2021 ◽  
Vol 8 (2) ◽  
pp. 01-13
Author(s):  
Thilelli Aitouakli ◽  
Ettayib Bensaci
Keyword(s):  
Nest Site ◽  
Nest Site Selection ◽  
Egg Laying ◽  
Nest Density ◽  
Breeding Ecology ◽  
Apple Orchards ◽  
Breeding Area ◽  
Breeding Parameters ◽  
Turtle Dove ◽  
Selection Of

The main aim of our work was to investigate the breeding parameters in three orchard types in Algeria (apple, cherry and nectarine) for better conservation of existing species. A total of 149 active Turtle dove nests were monitored in these man–made agro-systems. Egg laying occurred from early May and continued until mid-August. Egg laying started later in cherry trees and stopped earlier in nectarines. Nest density was higher in apple orchards. Nests were located higher in nectarine. Clutch size was similar among orchard types. Northeast was the dominant orientation in all orchards. Breeding success was higher than that recorded in former studies. Desertion was the main cause of nest failure. The apple orchards are the preferred breeding area for turtle dove in this region.

Tree characteristics, microhabitat and edge effect in plantations govern European Turtle-dove Streptopelia turtur nest habitat selection at the edge of Sahara: implications for conservation of a vulnerable species

2021 ◽  
pp. 1-15
Author(s):  
NASRINE SAÂD ◽  
SAÂD HANANE ◽  
KAMILIA FARHI ◽  
NACERDDINE MATALLAH ◽  
MOHAMED DHAYA EL HAK KHEMIS
Keyword(s):  
Date Palm ◽  
Variation Partitioning ◽  
Tree Height ◽  
Palm Tree ◽  
Palm Trees ◽  
Efficient Management ◽  
Nest Habitat ◽  
Turtle Dove ◽  
Tree Characteristics ◽  
Streptopelia Turtur

Summary Tree characteristics, microhabitat, and human presence were measured around nest trees (n = 92) and non-nest trees (n = 92) to identify the best predictors of the European Turtle-dove Streptopelia turtur nest occurrence in date palm plantations of the Biskra region (Algeria). Nest occurrence was (i) positively influenced by the height of trees and that of the herbaceous layer, and (ii) quadratically affected by diameter at breast height (DBH), the cover of trees, the cover of the herbaceous vegetation, and the distance to the edge of date palm plantation. Variation partitioning analysis revealed that the pure effect of tree physical characteristics (tree height and DBH) was robust in explaining the occurrence of Turtle Dove nests (adj. R2 = 0.52, P = 0.001). For an efficient management of this Saharan population, special attention should be paid in the short term to keeping high date palm trees while ensuring, in the medium and long term, the presence of different-sized palm tree classes at each exploitation. There is no doubt that date palm plantations of Biskra are of paramount importance because they offer good opportunities for consolidating and improving the knowledge on this threatened species and other species at the Sahara edge.

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.

scholarly journals Allometric Equations for Estimating Biomass and Carbon Stocks in Afforested Open Woodlands with Black Spruce and Jack Pine, in the Eastern Canadian Boreal Forest

Forests ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 59
Author(s):  
Olivier Fradette ◽  
Charles Marty ◽  
Pascal Tremblay ◽  
Daniel Lord ◽  
Jean-François Boucher
Keyword(s):  
Large Scale ◽  
Ad Hoc ◽  
Black Spruce ◽  
Tree Height ◽  
Jack Pine ◽  
Carbon Stocks ◽  
Allometric Equations ◽  
C Stocks ◽  
The Difference ◽  
Canadian Boreal Forest

Allometric equations use easily measurable biometric variables to determine the aboveground and belowground biomasses of trees. Equations produced for estimating the biomass within Canadian forests at a large scale have not yet been validated for eastern Canadian boreal open woodlands (OWs), where trees experience particular environmental conditions. In this study, we harvested 167 trees from seven boreal OWs in Quebec, Canada for biomass and allometric measurements. These data show that Canadian national equations accurately predict the whole aboveground biomass for both black spruce and jack pine trees, but underestimated branches biomass, possibly owing to a particular tree morphology in OWs relative to closed-canopy stands. We therefore developed ad hoc allometric equations based on three power models including diameter at breast height (DBH) alone or in combination with tree height (H) as allometric variables. Our results show that although the inclusion of H in the model yields better fits for most tree compartments in both species, the difference is minor and does not markedly affect biomass C stocks at the stand level. Using these newly developed equations, we found that carbon stocks in afforested OWs varied markedly among sites owing to differences in tree growth and species. Nine years after afforestation, jack pine plantations had accumulated about five times more carbon than black spruce plantations (0.14 vs. 0.80 t C·ha−1), highlighting the much larger potential of jack pine for OW afforestation projects in this environment.

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 Stream Restoration for Legacy Sediments at Gramies Run, Maryland: Early Lessons from Implementation, Water Quality Monitoring, and Soil Health

Water ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 2164
Author(s):  
Katie Mattern ◽  
Alyssa Lutgen ◽  
Nathan Sienkiewicz ◽  
Grant Jiang ◽  
Jinjun Kan ◽  
...  
Keyword(s):  
Water Quality ◽  
Riparian Vegetation ◽  
Stream Restoration ◽  
Soil Health ◽  
Water Quality Monitoring ◽  
Quality Monitoring ◽  
Nutrient Inputs ◽  
Nitrogen And Phosphorus ◽  
Partial Removal ◽  
Riparian Trees

While stream restorations are increasingly being adopted to mitigate sediment and nutrient inputs and to meet water quality regulatory targets, less information is available on the drivers behind the design, implementation, effectiveness, and cost of restorations. We address these issues for a $4.2 million stream restoration for legacy sediments implemented for a rural Piedmont stream in Maryland, USA. A total of 1668 m of stream was restored in three phases, which included the partial removal of legacy sediments, the grading of streambanks, floodplain creation, channel reshaping with meanders and pool-riffle forms, the raising of the stream bed, and the planting of riparian vegetation. The sediment, nitrogen, and phosphorus concentrations and fluxes were monitored before- and during the restoration phases. The sites selected for restoration had legacy sediments vulnerable to erosion and were on state-owned land. The restoration design was based on the need to maintain mature riparian trees and preserve existing sensitive wetland habitats. Water quality monitoring indicated that the sediment and nutrient fluxes increased during the restoration phase and were attributed to disturbance associated with construction activities and increased runoff. We also recommend that soil health needs to be included as an integral component to enhance the effectiveness and resilience of stream restorations.

scholarly journals Survival probabilities of first and second clutches of blackbird (Turdus merula) in an urban environment

2010 ◽  
Vol 62 (2) ◽  
pp. 489-493 ◽  
Author(s):  
Kornelia Kurucz ◽  
Helena Kallenberger ◽  
Csilla Szigeti ◽  
J.J. Purger
Keyword(s):  
Urban Environment ◽  
Small Mammals ◽  
Breeding Success ◽  
Survival Probability ◽  
Botanical Garden ◽  
Hedera Helix ◽  
Artificial Nests ◽  
The Difference ◽  
The University ◽  
Predation Rates

The breeding success of blackbirds was investigated in April and June 2008 and 2009 in the Botanical Garden of the University of Pecs, with a total of 50 artificial nests at each of the four sessions (with 1 quail egg and 1 plasticine egg placed in every nest). In all four study periods of the two years, 2 nests (4%) were destroyed by predators. Six nests (12%, of the nests) were not discovered in either of the cases. The survival probability of artificial nests was greater in April than in June (both years), but the difference was significant only in 2008. Nests placed into a curtain of ivy (Hedera helix) on a wall were located higher up than those in bushes, yet their predation rates were quite similar. The predation values of quail vs. plasticine eggs did not differ in 2008. In the year 2009, however, significantly more quail eggs were discovered (mostly removed), than plasticine eggs. Marks that were left on plasticine eggs originated mostly from small mammals and small-bodied birds, but the disappearance of a large number of quail and plasticine eggs was probably caused by larger birds, primarily jays.

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