The persistence of moles in nesting at the same site as indicated by mushroom fruiting and nest reconstruction

1993 ◽  
Vol 71 (8) ◽  
pp. 1690-1693 ◽  
Author(s):  
Naohiko Sagara ◽  
Hisashi Abe ◽  
Hiroaki Okabe
Keyword(s):  
Nesting Site ◽  
Nesting Sites

Evidence is presented to show that under certain conditions, three species of Japanese talpine mole, Euroscaptor mizura, Mogera wogura, and Mogera kobeae, persistently use the same nest or nesting site. The moles' nesting sites were detected by the fruiting of an agaric species, Hebeloma radicosum, which specifically colonizes a mole's latrines near its nest. The nests were removed to observe the moles' response. During excavation, the moles often returned to the disturbed sites in search of their nests. The nests were soon reconstructed, followed by refruiting of the mushroom. Thus, one nesting site of E. mizura was used for more than 15 years, despite removal of the nest seven times, and another for more than 5 years, a period ended by the capture of the occupant. Similar results were also obtained with M. wogura and M. kobeae. The occupants may have changed generationally at each site. These persistently used sites seem to be associated with well-drained soil and appropriate vegetation.

scholarly journals Comparison of beach profiles conducive for turtle nesting in Andaman

2018 ◽  
Vol 10 (10) ◽  
pp. 12337-12343
Author(s):  
Subramanian Narayani ◽  
Sasidharan Venu ◽  
Andrea Joan D'Silva
Keyword(s):  
Anthropogenic Activities ◽  
Slope Angle ◽  
Vegetation Patterns ◽  
Long Beach ◽  
Single Factor ◽  
High Slope ◽  
Beach Slope ◽  
Nesting Site ◽  
Nesting Sites ◽  
Study Sites

The present study was undertaken to compare beach characteristics associated with turtle nesting in the Andaman group of islands.  Karmatang, Kalipur, Ramnagar, Chidiyatapu, Carbyn’s Cove, and Wandoor were chosen as study sites.  Beach slope, sand grain characteristics, and general vegetation patterns were analysed.  The angle of inclination of the beach slope ranged from 2.06 to 8.3 degrees.  Beaches with a higher angle had a comparatively higher number of nesting sites.  The study shows that a single factor does not make a beach more conducive for nesting.  Chidiyatapu has the widest beach but lacks other features and so it is not a preferred nesting site.  The grain size of sand in Wandoor is highly favourable, but the intertidal region is not long and there are streams that can drown the nests.  Karmatang has a long beach and a higher slope angle.  Ramnagar has a moderate beach length and a high slope angle.  The dominant grains at both the beaches were found to be granules.  The absence of streams and artificial light, fewer number of anthropogenic activities, lack of obstacles, the presence of bordering vegetation, and a conducive beach slope with granular sand grains make Ramnagar, Karmatang, and Kalipur ideal for turtle nesting.

A review on crocodilian nesting habitats and their characterisation via remote sensing

2019 ◽  
Vol 40 (4) ◽  
pp. 403-423 ◽  
Author(s):  
Gabriela Banon ◽  
Eduardo Arraut ◽  
Francisco Villamarín ◽  
Boris Marioni ◽  
Gabriel Moulatlet ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Forest Canopy ◽  
Open Water ◽  
Site Distribution ◽  
Nesting Site ◽  
Nesting Sites ◽  
Conservation Actions ◽  
Key Variables ◽  
Reproductive Females ◽  
Remote Sensing Methods

Abstract Crocodilians usually remain inside or near their nests during most vulnerable life stages (as eggs, neonates and reproductive females). Thus, protection of nesting sites is one of the most appropriate conservation actions for these species. Nesting sites are often found across areas with difficult access, making remote sensing a valuable tool used to derive environmental variables for characterisation of nesting habitats. In this study, we (i) review crocodilian nesting habitats worldwide to identify key variables for nesting site distribution: proximity to open-water, open-water stability, vegetation, light, precipitation, salinity, soil properties, temperature, topography, and flooding status, (ii) present a summary of the relative importance of these variables for each crocodilian species, (iii) identify knowledge gaps in the use of remote sensing methods currently used to map potential crocodilian nesting sites, and (iv) provide insight into how these remotely sensed variables can be derived to promote research on crocodilian ecology and conservation. We show that few studies have used remote sensing and that the range of images and methods used comprises a tiny fraction of what is available at little to no cost. Finally, we discuss how the combined use of remote sensing methods – optical, radar, and laser – may help overcome difficulties routinely faced in nest mapping (e.g., cloud cover, flooding beneath the forest canopy, or complicated relief) in a relevant way to crocodilians and to other semiaquatic vertebrates in different environments.

scholarly journals Deciding Where to Sleep: Spatial Levels of Nesting Selection in Chimpanzees (Pan troglodytes) Living in Savanna at Issa, Tanzania

2020 ◽  
Vol 41 (6) ◽  
pp. 870-900 ◽  
Author(s):  
R. Adriana Hernandez-Aguilar ◽  
Trond Reitan
Keyword(s):  
Pan Troglodytes ◽  
Site Selection ◽  
Spatial Scales ◽  
Tree Height ◽  
Important Variable ◽  
Physical Characteristics ◽  
Individual Tree ◽  
Trunk Diameter ◽  
Nesting Site ◽  
Nesting Sites

AbstractTo understand how animals select resources we need to analyze selection at different spatial levels or scales in the habitat. We investigated which physical characteristics of trees (dimensions and structure, e.g., height, trunk diameter, number of branches) determined nesting selection by chimpanzees (Pan troglodytes) on two different spatial scales: individual nesting trees and nesting sites. We also examined whether individual tree selection explained the landscape pattern of nesting site selection. We compared the physical characteristics of actual (N = 132) and potential (N = 242) nesting trees in nesting sites (in 15 plots of 25 m × 25 m) and of all trees in actual and potential nesting sites (N = 763 in 30 plots of 25 m × 25 m). We collected data in May and June 2003 in Issa, a dry and open savanna habitat in Tanzania. Chimpanzees selected both the site they used for nesting in the landscape and the trees they used to build nests within a nesting site, demonstrating two levels of spatial selection in nesting. Site selection was stronger than individual tree selection. Tree height was the most important variable for both nesting site and tree selection in our study, suggesting that chimpanzees selected both safe sites and secure trees for sleeping.

scholarly journals A review of the Santiago Purple Heron Ardea purpurea bournei, with a report of a new colony

1992 ◽  
Vol 2 (1) ◽  
pp. 15-23 ◽  
Author(s):  
C. J. Hazevoet
Keyword(s):  
Breeding Season ◽  
Total Population ◽  
Small Population ◽  
Climatic Conditions ◽  
Cape Verde ◽  
Educational Materials ◽  
Nest Sites ◽  
Large Trees ◽  
Nesting Site ◽  
Nesting Sites

SummaryThe Santiago Purple Heron Ardea (purpurea) bournei is endemic to the island of Santiago, Cape Verde Islands. In contrast to nominate purpurea, it nests high in the crowns of large trees. During the 1950s and 1960s, the total population was probably c. 75 pairs, mainly at the now defunct heronry at São Domingos. After the disappearance of that colony during the early 1970s, the only known nesting site was at Boa Entrada, Santa Catarina region, comprising less than 10 pairs. In January 1991, a new colony was discovered at Banana, Ribeira Montanha, with c. 20 recently used nests of which 2–3 had large young in January–February. The current population is thought not to exceed c. 20 pairs. Breeding occurs from late August to March. Apart from two old records in April, there are no records from the non-breeding season. Probably the birds disperse into the mountainous interior of the island after breeding and feed on the dry hillsides. The causes of the decline are unclear, but scarcity of suitable nest-sites and deteriorating climatic conditions may be significant. Because of the extremely small population, the birds and their nesting sites must be protected by law and the local people informed about the birds and their need for protection; educational materials are being developed.

Nest intrusions in relation to breeding status in the spotless starling

Behaviour ◽  
2013 ◽  
Vol 150 (13) ◽  
pp. 1553-1566 ◽  
Author(s):  
José P. Veiga ◽  
Vicente Polo ◽  
Marta Arenas ◽  
Sara Sánchez
Keyword(s):  
Personal Information ◽  
Public Information ◽  
Feeding Rates ◽  
Nest Boxes ◽  
Sturnus Unicolor ◽  
Nesting Site ◽  
Nesting Sites ◽  
Spotless Starling ◽  
Nestling Feeding ◽  
Breeding Status

Nest intruders are common in many avian species. In the spotless starling (Sturnus unicolor), a passerine closely related to the European starling (Sturnus vulgaris), it has been recently shown that visits to alien nests were in most cases related to get familiarity and personal information about prospected nest boxes and that collecting public information seems also to be involved in the intruding behaviour. In the present study we investigate whether nest intrusions are related to breeding status in both males and females. Individuals that had bred previously in the colony were detected as frequently as those without previous breeding experience intruding nests and the proportion of intruders that were owners and those that had not a nesting site during the current year was balanced. Males that were actively breeding and those that were not breeding intruded with similar frequencies in alien nests, while most females were not actively breeding when they were observed intruding a nest box. The nests more frequented by male intruders were those showing the highest female nestling feeding rates, but the frequency of female intrusions was not similarly affected by female owner feeding rates. The results suggest that some of the intrusions by males are related to nest acquisition although in general males seem to intrude to obtain other breeding resources, presumably extra-pair matings. Female intruders with a nesting territory but not currently breeding could be sampling alternative nesting sites while female floaters that intruded nests could be searching for nesting sites or attempting to lay parasitic eggs. Birds behaving as intruders at some moment of their stay in the breeding colony raised more fledglings that birds never observed performing this behaviour.

scholarly journals Breeding record of Black-headed Ibis Threskiornis melanocephalus (Aves: Threskiornithidae) at Mavoor wetland, Kozhikode District, Kerala, India

2021 ◽  
Vol 13 (14) ◽  
pp. 20299-20301
Author(s):  
C.T. Shifa
Keyword(s):  
Shallow Water ◽  
First Record ◽  
Breeding Sites ◽  
Widespread Distribution ◽  
Nesting Site ◽  
Nesting Sites ◽  
Near Threatened

Black-headed Ibis Threskiornis melanocephalus is a nomadic and medium sized waterbird foraging in shallow water habitats and is listed under Near-Threatened category of IUCN. Though it has a widespread distribution within Kerala, little is known about their breeding sites and their ecology. In Kerala, only three nesting sites were reported so far. Present study found an additional nesting site in Mavoor wetland, which is the first record in Kozhikode district and fourth site for Kerala.

scholarly journals Satellite Tracking of Post-nesting Green Sea Turtles (Chelonia mydas) From Ras Baridi, Red Sea

2021 ◽  
Vol 8 ◽  
Author(s):  
Ahmed M. Al-Mansi ◽  
Anas Z. Sambas ◽  
Baleegh A. Abukaboos ◽  
Ahmed H. Al Zahrani ◽  
Ahmed S. Abdulaziz ◽  
...  
Keyword(s):  
Saudi Arabia ◽  
Red Sea ◽  
Chelonia Mydas ◽  
Marine Turtles ◽  
Green Turtles ◽  
The North ◽  
Nesting Site ◽  
Nesting Sites ◽  
Coastal Margin ◽  
Anthropogenic Threats

Identifying migratory pathways and linking nesting sites to foraging areas is essential for effective conservation management of migratory species, such as marine turtles. Post-nesting marine turtles disperse from their nesting sites to multiple foraging areas located from a few to hundreds of kilometers away. Over a six-year period 16 female green turtles (Chelonia mydas) were equipped with satellite transmitters between October and December of five nesting seasons to determine their migratory routes from their nesting area at five contiguous beaches at Ras Baridi, Saudi Arabia, to their foraging areas. All foraging areas for these turtles were located in shallow coastal areas or in shallow areas around offshore islands within the Red Sea basin. The majority (n = 12) migrated through the shallow (<200 m) water along the coastal margin to reach foraging areas located to the North (n = 4) and South (n = 12) of the nesting site. Four turtles crossed the deep trough of the Red Sea during their journeys. Ten of the 16 turtles migrated to foraging areas within the territorial waters of Saudi Arabia. The other six turtles migrated to foraging areas in Egypt (n = 4) and Eritrea (n = 2). These 16 turtles traveled between 130 and 1749 km from their nesting site to foraging areas located in the northern, middle and southern parts of the Red Sea. Because these turtles utilized foraging areas in at least three countries (Saudi Arabia, Egypt, and Eritrea) and one passed through the territorial waters of Sudan, conservation and management of green turtles in the Red Sea requires multinational cooperation to address anthropogenic threats in the region.

scholarly journals Территориальные связи, гнездовой консерватизм, дисперсия и филопатрия кукши Perisoreus infaustus (Passeriformes, Aves) в Якутии

2020 ◽  
pp. 97-104
Author(s):  
N. N. Egorov ◽  
◽  
N. I. Germogenov ◽  
A. N. Sekov ◽  
A. V. Losorov ◽  
...  
Keyword(s):  
Local Population ◽  
Breeding Birds ◽  
Significant Part ◽  
Middle Taiga ◽  
Coniferous Forests ◽  
Nesting Site ◽  
Nesting Sites ◽  
The City ◽  
Perisoreus Infaustus

Studies were conducted within two species model sites (471 and 1360.3 ha) in the middle taiga light-coniferous forests near the city Yakutsk (62° N, 129° E) in 1975-2015. The Siberian jay inhabits a variety of landscape conditions and is very plastic when choosing a nesting site and a place for the nest. A significant part of breeding birds are characterized by conservatism manifested in the presence of permanent habitats with nesting sites and nesting locations. Individual tagging data indicate that most chicks left the model sites (were died or emigrated). Only a small percentage of young birds stayed within the local population, joining territorial pairs as a third сinertт partner, and later, having acquired a partner and a territory, being included in the reproductive population.

scholarly journals Nest aggregations of wild bees and apoid wasps in urban pavements: a street life to be promoted in urban planning

2021 ◽  
Author(s):  
Gregoire Noel ◽  
Violette Van Keymeulen ◽  
Yvan Barbier ◽  
Sylvie Smets ◽  
Olivier Van Damme ◽  
...  
Keyword(s):  
Urban Ecology ◽  
Community Dynamics ◽  
Engineering Management ◽  
Floral Resources ◽  
Wild Bees ◽  
Wasp Species ◽  
Management Guidelines ◽  
Nesting Site ◽  
Nesting Sites ◽  
Ground Nesting

In the last 10 years, knowledges of wild bees and apoid wasps community dynamics have gained interest in urban ecology focusing on the availability of floral resources in cities. Although understudied, the urban environment impacts the conditions of their nesting sites. Recent observations in the Brussels-Capital Region (Belgium) showed that urban pavements can be a novel nesting opportunity for Hymenoptera ground-nesting species such as wild bees and apoid wasps. Here, using citizen science, we investigated the richness of ground-nesting species living under urban pavements, the preferences of the sidewalk joint size related to ground-nesting species size and for sidewalk type or for soils texture under the pavements on the nesting site selection. A total of 22 species belonging to 10 Hymenoptera families of wild bees and digger wasps with their associated kleptoparasites were identified on 89 sites in Brussels. Sandstone setts or concrete slabs with an unbound joint size around 1 cm were found to be best suitable urban pavements for the ground-nesting species. The soil texture under the pavement was highly sandy among our samples. Finally, we also suggest engineering management guidelines to support bee and wasp species nesting under urban pavement in highly urbanized areas. Such observations pave the way for much research in the field of urban ecology to conceive multifunctional pavement promoting biodiversity.

Nesting sites characteristics of stingless bees (Hymenoptera: Apidae) in Central Sulawesi, Indonesia

2017 ◽  
Vol 5 (10) ◽  
pp. 1 ◽  
Author(s):  
Nelky Suriawanto ◽  
Tri Atmowidi ◽  
Sih Kahono
Keyword(s):  
New Record ◽  
Stingless Bees ◽  
Sampling Method ◽  
Brick Wall ◽  
Eusocial Insects ◽  
Site Characteristics ◽  
Nesting Site ◽  
Nesting Sites ◽  
Central Sulawesi ◽  
Settlement Areas

Stingless bees (Hymenoptera: Apidae) is eusocial insects that live together in a colony. This research was aimed to study the nesting site characteristics of stingless bees in the settlement areas at Central Sulawesi, Indonesia. The nesting sites were observed by purposive sampling method from July 2015 to January 2016. Four species belong to genus Tetragonula were found, namely T. fuscobalteata, T. biroi, T. sapiens, and T. laeviceps. Two spesies, T. biroi and T. sapiens are the new record in Sulawesi island. The highest abundance of stingless bees colony was T. fuscobalteata (92.26%), followed by T. biroi (4.17%), T. sapiens (2.98%), and T. laeviceps (0.59%). Nesting sites of T. fuscobalteata were found in the stone, brick wall, wooden wall, bamboo, and iron cavities, T. biroi in the wooden wall, stone, and brick wall cavities, T. sapiens in stone cavities, while T. laeviceps in wooden walls.

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