Reproductive Phonology and Breeding Success on the Whiskered Tern (Chlidonias hybridus) in Zarrinkola and Marzoonabad Permanent Ab-bandans of Mazandaran Province
Journal Title: محيط شناسي - Year 2007, Vol 33, Issue 42
Abstract
This study concludes of researches during May-September, 2003. There is one breeder group of Whiskered Tern (Chlidonias hybridus) (930 pairs) in zarrinkola Ab-bandan and two breeder group (1390 pairs) were in marzoonabad Ab-bandan. Reproductive phonology was started with nesting behavior in the end of May and was continued to maximum chicks fledged time in the end of July. Clutch size was 1-4 eggs in zarrinkola and second breeder group of marzoonabad, whereas, it was 1-5 eggs in the first breeder group of marzoonabad. Brood size was included 1-3 chicks. Breeding success was %57.08, %82.96 and %75.87 in zarrinkola, first and second breeder group of marzoonabad, respectively. There is not any significant difference between clutch size and brood size with breeding success (p>0.05). But, there is significant difference (p<0.05) between the rate of losses among the reproductive phonology stages. Because of intense rainfall, the maximum losses were during the incubation time. Breeding success has not any significant difference between study areas (p>0.05).
Authors and Affiliations
Sayed Mehdi Amini Nasab , Behrouz Behrouzi Rad, Alireza Riahi Bakhtiari
Keywords
Related Articles
- EP ID EP84437
- DOI -
- Views 122
- Downloads 0
Investigation of Heavy Metals Accumulation in soil, leave and fruit of Olive (Olea europaea L.) Irrigated with Municipal Effluent
The most factors for making unbalance in irrigation of soil with municipal effluent is the presence of heavy metals in municipal effluent and transformation of this pollution in food chain and threaten of healthy. The ai...
Evaluation of Geothermal Power Plants Development:<br /> An Environmental Economics Perspective<br />
In the sector of electricity production, the existence of investment resources limitation and environmental factors are the main factors that influence this process. The reduction of costs and the destructive impacts of...
مطالعة تغييرات پوشش گياهي در امتداد شيب رطوبتي منطقه گدوک فيروزکوه
منطقه گدوک در حدفاصل دو شهر ورسک و فيروزکوه در البرز مرکزي قراردارد. مساحت اين منطقه 3113 هکتار و داراي دو زيرحوزة آبريز در جهات شمال شرقي و جنوب غربي است. پوشش گياهي اين منطقه شامل 406 گونه و تقسيمات تحت گونه اي از 62 خ...
مدل تعيين شايستگي مراتع براي چراي گوسفند با استفاده از <br /> مطالعة موردي منطقة طالقان GIS
تعيين شايستگي مرتع از موارد مهم در مديريت آن به شمار مي رود و شناخت عوامل موثر بر آن اهميت دارد. از آنجايي که تقريباً همه اجزاي اکوسيستم مرتعي در تعيين شايستگي تأثير مي گذارند و بررسي همه اين عوامل امکان پذير نيست، دراين...
Computer Waste Management<br /> <br />
The worldwide rapid growth in production and consumption of computers, have created special refuses. These refuses are categorized as hazardous wastes due to their human health risks and environmental hazards. The lead u...