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Quader, Suhel
- Focal Plant and Neighbourhood Fruit Crop Size Effects on Fruit Removal by Frugivores in a Semi-Arid Landscape Invaded by Lantana camara L.
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Authors
Affiliations
1 Nature Conservation Foundation, Mysuru - 570 002, IN
2 Wildlife Institute of India, Dehradun - 248 002, IN
1 Nature Conservation Foundation, Mysuru - 570 002, IN
2 Wildlife Institute of India, Dehradun - 248 002, IN
Source
Current Science, Vol 116, No 3 (2019), Pagination: 405-411Abstract
Mutualistic associations between frugivorous vertebrates and fleshy-fruited plants result in seed dispersal, a vital ecological process affecting plant populations and communities. Invasive fleshy-fruited plants can easily integrate into existing mutualistic networks if generalist frugivorous species start consuming invasive fruit. Additionally, the presence of a copiously fruiting invasive plant in the neighbourhood of fruiting native plants could affect the fruit removal from such plants by either reducing (competitive interaction), increasing (facilitative interaction) or not affecting (no interaction) visits by frugivorous vertebrates. In this study, we explore the effects of the presence of a fruiting invasive shrub Lantana camara L. in the neighbourhood of fruiting native species Erythroxylum monogynum Roxb. and Flueggea leucopyrus Willd. on the visit and fruit removal rate by avian frugivores in a semi-arid bird preserve in southern India. We conducted plant watches within fruiting patches of 30 m radius and observed the identity, numbers and fruit-handling behaviour by avian frugivores on focal native plants. We found that, on average, for the same fruit crop size, E. monogynum received more visits and more fruit removal than F. leucopyrus irrespective of the presence of fruiting neighbours. Focal tree fruit crop size was a better predictor of frugivore behaviour than the fruit crop size of neighbouring plants (both native and invasive) and was positively associated with frugivore visit rate and fruit removal from focal plants. We infer that there is little evidence for facilitation or competition by invasive neighbours for the dispersal services of vertebrate mutualists at the spatial and temporal scale examined in this study. Longer-term, larger-scale data are required to assess the changing impacts of invasive plants on native plant–frugivore interactions.Keywords
Fruiting Neighbourhood, Invasive Plant, Lantana camara, Plant-Frugivore Association, Semi-Arid Landscape.Full Text
References
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- Size–Logging Interactions and Population Dynamics in Tropical Understorey Birds
Abstract Views :242 |
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Authors
Affiliations
1 National Centre for Biological Sciences, GKVK Campus, Bengaluru 560 065, IN
2 Nature Conservation Foundation, Mysuru 570 002, IN
1 National Centre for Biological Sciences, GKVK Campus, Bengaluru 560 065, IN
2 Nature Conservation Foundation, Mysuru 570 002, IN
Source
Current Science, Vol 116, No 5 (2019), Pagination: 795-801Abstract
Demographic vital rates (e.g., fecundity and survival) determine population size and viability. However, how anthropogenic habitat change differentially influences these dynamic population processes for species with different traits remains unknown. Crucially, this limits a mechanistic understanding of species- and community- level patterns in response to intensity of habitat change, and therefore, impedes robust prediction of future species responses. We investigated how size (across 26 forest birds, spanning almost an order of magnitude in body mass) and habitat modification (logging intensity, from intact forest to a 2.5-fold reduction in tree density) might interact to influence survival, reproduction and dispersal. Data were collected over five sessions under the robust design in a capture-mark-recapture framework and analysed using reverse time capture–recapture models. We found that smaller species were more fecund with increased logging intensity, and dispersed from more heavily logged to more intact forest. With increasing size, species reproduced better in progressively more intact forest, and dispersed from intact forest into more logged forest. These results indicate important trait-linked differences in the relative significance of various demographic processes in influencing species responses to varying intensities of habitat change. Separating the mechanistic processes underlying observed patterns is crucial to understanding and predicting anthropogenic impacts on biodiversity.Keywords
Apparent Survival, Eastern Himalaya, Fecundity, Natal Dispersal, Reverse Time Mark-Recapture, Understorey Insectivores.References
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- Using Citizen Science to Build Baseline Data on Tropical Tree Phenology
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Authors
Affiliations
1 Nature Conservation Foundation, 1311, ‘Amritha’, 12th Main, Vijayanagar 1st Stage, Mysuru 570 017, India, IN
2 Nature Conservation Foundation, 1311, ‘Amritha’, 12th Main, Vijayanagar 1st Stage, Mysuru 570 017, India, IN
1 Nature Conservation Foundation, 1311, ‘Amritha’, 12th Main, Vijayanagar 1st Stage, Mysuru 570 017, India, IN
2 Nature Conservation Foundation, 1311, ‘Amritha’, 12th Main, Vijayanagar 1st Stage, Mysuru 570 017, India, IN
Source
Current Science, Vol 121, No 11 (2021), Pagination: 1409-1416Abstract
Large-scale and long-term baselines on climate-sensitive phenology of widespread tree species are lacking in the Indian subcontinent. Citizen scientists can help bridge this information gap by contributing simple, technology-based data. Here we describe an India-wide initiative called SeasonWatch, with preliminary insights into contributor behaviour and species phenology. Between 2011 and 2019, cumulative contributor numbers have increased every year, although consistent contribution remains constant and low. We describe seasonal and spatial phenological patterns in most-observed species based on repeated monitoring and one-time ‘bioblitz’ events. We study in detail the flowering phenology of one particular species, Cassia fistula, which appears to show aberrant phenology, reflecting a potential shift away from culturally known flowering dates. We conclude that citizen science-contributed information can be a valuable reference database to compare future changes in tree phenologyKeywords
Baseline Data, Citizen Science, Climate Change, Seasonality, Tree Phenology.References
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Authors
J. Praveen
1,
P. O. Nameer
2,
Ashish Jha
3,
Anish Aravind
4,
K. G. Dilip
5,
Dipu Karuthedathu
6,
George Tom
1,
Hari Mavelikara
7,
Harikumar Mannar
8,
Jafer Palot
9,
Jaichand Johnson
10,
R. Jishnu
11,
K. Maxim Rodrigues
12,
P. M. Mujeeb
13,
L. Namassivayan
14,
Naveelal Payyeri
13,
P. P. Nesrudheen
6,
S. Prasanth Narayanan
8,
S. S. Prasanth
6,
M. C. Prashantha Krishna
12,
E. S. Praveen
15,
Praveen Velayudhan
14,
Premchand Reghuvaran
5,
Raju Kidoor
12,
R. L. Rathish
16,
R. Roshnath
17,
C. Sashikumar
9,
Satyan Meppayur
9,
A. K. Sivakumar
10,
A. K. Sreedevi
8,
B. Sreekumar
8,
E. R. Sreekumar
18,
P. B. Sumesh
19,
R. Venugopal
14,
Vinod Venugopal
20,
C. K. Vishnudas
21,
Vishnupriyan Kartha
5,
Vivek Puliyeri
6,
Suhel Quader
22,
Abinand Reddy
22,
Abdul Raheem Puthiyeri
9,
K. Abdul Riyas
9,
R. S. Abhijith
8,
Abhijith Surendran
8,
Abhin M. Sunil
18,
Abhinand Chandran
13,
C. Abhirami
18,
Abhirami M. Jayakumar
18,
Abhishek Sebastian Peter
10,
N. V. Afreed Muhammed
22,
Afthab Faisal Katakath
18,
P. Ajai
8,
Aju K. Raju
7,
P. M. Akhil
14,
U. S. Akhil
16,
U. S. Amal
23,
Anamika Menon
24,
Anas Ibinu Ansari
15,
K. S. Aneesh
10,
S. Aneesh
7,
C. Anjana Hari
18,
R. Anjitha
12,
P. N. Anoop Raj
25,
Anu John
11,
Anuradha Varma
5,
S. S. Anushreedha
10,
C. K. Aravind
9,
Arjun Ramachandran
18,
B. Arun
6,
Arun George
15,
Arun P. Gopi
19,
Arun Varghese
5,
Arya Vinod
14,
Ashley Shaji
10,
V. M. Ashok Raj
6,
Ashwin Viswanathan
22,
Aslam Mohammed
9,
A. Aswin
18,
K. S. Aswin
18,
A. Azhar Ali
18,
P. B. Balaji
26,
M. Bibin Paul
16,
J. Chaithra Shree
26,
Chandrasekaran Venkatraman
1,
K. Charutha
12,
Clareena T. Jose
18,
Clince P. Jose
9,
Dalip Singh
18,
Devika Sanghamithra
18,
Digvijay Singh Sikarwar
5,
Divin Murukesh
6,
V. Divin
1,
Fauzia Arief
5,
Jaydev Mandal
22,
P. J. Sarlin
10,
A. Adil Nafar
6,
K. H. Amitha Bachan
27,
V. Rejitha
7,
R. S. Vishnu Dev
16,
B. Elias Rowther
10,
Firosh Raja
18,
Geetha Iyer
1,
Ginu George
5,
T. U. Gireesan
8,
P. K. Girish Mohan
9,
Glen Preetesh Dsouza
12,
G. Govind
10,
P. Greeshma
15,
P. M. Hari Prasad
8,
T. V. Hariharan
9,
A. Harith
10,
C. Harith
12,
B. Hemanth
10,
Ijaas Mohamed
5,
J. Patrick David
5,
P. K. Jain
22,
P. Jameela
15,
G. Jayakrishnan
8,
K. Jishnu
9,
M. O. Jismi
18,
Jithin Johnson
5,
C. Joel Soniya
10,
Jose Rani Babu
18,
Joseph Roy
10,
Jyothish Nelson
8,
M. Jyothi Krishnan
18,
K. Pranav Bhandary
12,
K. M. Jamaludheen
5,
Kavingal Ravi
14,
Karthik Thrikkadeeri
14,
Kausthubh K. Nair
5,
B. S. Kiran
21,
Kiran S. Kumar
10,
D. Kishore Raj
10,
Kishore Kumar Panaganti
22,
M. Krishna Moorthy
14,
R. Krishna Murthy
1,
M. R. Krishnanunni
18,
Latha Prabhakaran
5,
K. K. Lathika
6,
Libin Abraham
7,
G. Hari Narayanan
8,
Madhumita Panigrahi
28,
S. Manav
14,
Manoj Karingamadathil
15,
T. R. Manoj
26,
Manu Thomas
10,
P. P. Manuel
15,
Mebin George Varghese
8,
P. Megha Chandran
12,
M. Mohammad Sulaiman
14,
Mohammed Ashif Madathil
6,
V. K. Mohammed Hirash
9,
K. Mohammed Ramees
10,
M. Sadique Thirunnavaya
6,
A. P. Muhammed Niyas
10,
C. T. Muhasin
6,
Mukundan Kizhakkemadham
5,
Naseerudheen Abdul Azeez
14,
P. V. Nikhil
10,
C. Niranjana
29,
Nisha Mundekad
30,
Nithin Mohan
10,
A. Pavithra
5,
Poornima Viswanathan
9,
P. Pramod
28,
G. Prakash
26,
S. Prasath
26,
Prasoon Prakash
10,
N. Preethi
14,
Rahul Rajeevan
22,
M. Rajaguru
14,
V. Rajarajan
1,
Raju Sankaran
15,
K. Ratheesh
10,
Rayan Pradeep Crasta
12,
Remya Mohan
14,
Renju
19,
Robin C. Koshy
7,
Rohan Rai
12,
Roshin Tom
22,
Sachin Chandran
9,
M. V. Sachinkrishna
18,
M. V. Saeed Anvar Ali
14,
Sajitha Siril
18,
D. D. Samarth Bharadwaj
22,
Samuel George
22,
Sancia Morris
10,
Sandeep Augustine
5,
Sandeep K. Das
5,
Sandie Morris
10,
P. R. Sandra
15,
T. K. Sanuraj
12,
Saurabh Sawant
1,
Savio Morris
10,
K. Selvaganesh
20,
K. Shahil
22,
N. N. Shahina
18,
Shahul Valasy
9,
P. K. Siji
15,
Siju Joseph
7,
R. Sivashankar
15,
Siyad A. Karim
7,
Sreehari K. Mohan
18,
Sreehari M. Pillai
11,
M. Sri Sowmiya
9,
K. T. Srinila
6,
K. S. Subin
15,
V. G. Sujith
10,
Suryamol Sukumaran
10,
M. S. Syamili
18,
Tarun Menon
14,
Tejas Praveen
1,
S. A. Thilak
5,
Tony Antony
31,
U. R Ullas
32,
Vinod Ooralath Sivaji
7,
Vishnu Narayanan
10,
M. Vishnu Sreejith
9,
A. Vivek Chandran
15,
Vivek Sudhakaran
14,
R. Vridhi
15,
Wahiba Irshad Humam
18,
Yadukrishna J. Uchummal
22,
M. A. Yathumon
9
Affiliations
1 KeralaBirder, Ambadi, Kunnathurmedu, Palakkad 678 013, India, IN
2 College of Climate Change and Environmental Science, Kerala Agricultural University, Thrissur 680 656, India; Department of Wildlife Science, College of Forestry, Kerala Agricultural University, Thrissur 680 656, India, IN
3 College of Climate Change and Environmental Science, Kerala Agricultural University, Thrissur 680 656, India, IN
4 Cochin Natural History Society, Revathi Bhavan, Edathala P. O., Aluva 683 561, India; Kottayam Nature Society, Sri Nilayam, Near Union Club, Kottayam 686 001, India, IN
5 Cochin Natural History Society, Revathi Bhavan, Edathala P. O., Aluva 683 561, India, IN
6 Malappuram Birders, Tirur, Malappuram 676 101, India, IN
7 Pathanamthitta Birders, Pathanamthitta 689 645, India, IN
8 Kottayam Nature Society, Sri Nilayam, Near Union Club, Kottayam 686 001, India, IN
9 Malabar Natural History Society, Susheela Mandir, B.G. Road, Nadakkavu P.O., Kozhikode, 673 011, India, IN
10 WWF-India, CO Madhavan Road, Ayyankali Nagar, Kunnukuzhy, Thiruvananthapuram 695 035, India, IN
11 Kollam Birding Battalion, Kollam 691 010, India, IN
12 Kasaragod Birders, Kasaragod 671 121, India, IN
13 Malabar Natural History Society, Susheela Mandir, B.G. Road, Nadakkavu P.O., Kozhikode, 673 011, India; Calicut Birders Club, Bellevue Dental Muthappan Complex, Patteri, Kozhikode 673 016, India, IN
14 Natural History Society of Palakkad, Palakkad 678 001, India, IN
15 Kole Birders Collective, Thrissur 680 555, India, IN
16 Kerala Veterinary and Animal Sciences University, Pookode, Wayanad 673 576, India, IN
17 Malabar Awareness and Rescue Centre For Wildlife, Chettipedika, Kannur 670 004, India, IN
18 Department of Wildlife Science, College of Forestry, Kerala Agricultural University, Thrissur 680 656, India, IN
19 Birders Ezhupunna, Puthiyaparambil (H), Ezhupunna South P. O, Cherthala. Alappuzha 688 537, India, IN
20 Young Birders Club, Palakkad 678 001, India, IN
21 Hume Centre for Ecology and Wildlife Biology, 4th Cross Rd, Subhash Nagar, Kalpetta, Wayanad 673 121, India, IN
22 Nature Conservation Foundation, 1311, ‘Amritha’, 12th Main, Vijayanagar 1st Stage, Mysuru 570 002, India, IN
23 Kollam Birding Battalion, Kollam 691 010, India; Department of Wildlife Science, College of Forestry, Kerala Agricultural University, Thrissur 680 656, India, IN
24 WWF-India, CO Madhavan Road, Ayyankali Nagar, Kunnukuzhy, Thiruvananthapuram 695 035, India; Department of Wildlife Science, College of Forestry, Kerala Agricultural University, Thrissur 680 656, India, IN
25 Natural History Society of Palakkad, Palakkad 678 001, India; Sálim Ali Centre for Ornithology and Natural History, Anaikatty (Post), Coimbatore 641 108, India, IN
26 Sálim Ali Nature Forum, Coimbatore 641 108, India, IN
27 Western Ghats Hornbill Foundation, Extension Centre, MES Asmabi College, P. Vemballur, Thrissur 680 691, India, IN
28 Sálim Ali Nature Forum, Coimbatore 641 108, India; Sálim Ali Centre for Ornithology and Natural History, Anaikatty (Post), Coimbatore 641 108, India, IN
29 Natural History Society of Palakkad, Palakkad 678 001, India; Department of Wildlife Science, College of Forestry, Kerala Agricultural University, Thrissur 680 656, India, IN
30 Cochin Natural History Society, Revathi Bhavan, Edathala P. O., Aluva 683 561, India; Malappuram Birders, Tirur, Malappuram 676 101, India, IN
31 Pathanamthitta Birders, Pathanamthitta 689 645, India; Kottayam Nature Society, Sri Nilayam, Near Union Club, Kottayam 686 001, India, IN
32 WWF-India, CO Madhavan Road, Ayyankali Nagar, Kunnukuzhy, Thiruvananthapuram 695 035, India; Kole Birders Collective, Thrissur 680 555, India, IN
1 KeralaBirder, Ambadi, Kunnathurmedu, Palakkad 678 013, India, IN
2 College of Climate Change and Environmental Science, Kerala Agricultural University, Thrissur 680 656, India; Department of Wildlife Science, College of Forestry, Kerala Agricultural University, Thrissur 680 656, India, IN
3 College of Climate Change and Environmental Science, Kerala Agricultural University, Thrissur 680 656, India, IN
4 Cochin Natural History Society, Revathi Bhavan, Edathala P. O., Aluva 683 561, India; Kottayam Nature Society, Sri Nilayam, Near Union Club, Kottayam 686 001, India, IN
5 Cochin Natural History Society, Revathi Bhavan, Edathala P. O., Aluva 683 561, India, IN
6 Malappuram Birders, Tirur, Malappuram 676 101, India, IN
7 Pathanamthitta Birders, Pathanamthitta 689 645, India, IN
8 Kottayam Nature Society, Sri Nilayam, Near Union Club, Kottayam 686 001, India, IN
9 Malabar Natural History Society, Susheela Mandir, B.G. Road, Nadakkavu P.O., Kozhikode, 673 011, India, IN
10 WWF-India, CO Madhavan Road, Ayyankali Nagar, Kunnukuzhy, Thiruvananthapuram 695 035, India, IN
11 Kollam Birding Battalion, Kollam 691 010, India, IN
12 Kasaragod Birders, Kasaragod 671 121, India, IN
13 Malabar Natural History Society, Susheela Mandir, B.G. Road, Nadakkavu P.O., Kozhikode, 673 011, India; Calicut Birders Club, Bellevue Dental Muthappan Complex, Patteri, Kozhikode 673 016, India, IN
14 Natural History Society of Palakkad, Palakkad 678 001, India, IN
15 Kole Birders Collective, Thrissur 680 555, India, IN
16 Kerala Veterinary and Animal Sciences University, Pookode, Wayanad 673 576, India, IN
17 Malabar Awareness and Rescue Centre For Wildlife, Chettipedika, Kannur 670 004, India, IN
18 Department of Wildlife Science, College of Forestry, Kerala Agricultural University, Thrissur 680 656, India, IN
19 Birders Ezhupunna, Puthiyaparambil (H), Ezhupunna South P. O, Cherthala. Alappuzha 688 537, India, IN
20 Young Birders Club, Palakkad 678 001, India, IN
21 Hume Centre for Ecology and Wildlife Biology, 4th Cross Rd, Subhash Nagar, Kalpetta, Wayanad 673 121, India, IN
22 Nature Conservation Foundation, 1311, ‘Amritha’, 12th Main, Vijayanagar 1st Stage, Mysuru 570 002, India, IN
23 Kollam Birding Battalion, Kollam 691 010, India; Department of Wildlife Science, College of Forestry, Kerala Agricultural University, Thrissur 680 656, India, IN
24 WWF-India, CO Madhavan Road, Ayyankali Nagar, Kunnukuzhy, Thiruvananthapuram 695 035, India; Department of Wildlife Science, College of Forestry, Kerala Agricultural University, Thrissur 680 656, India, IN
25 Natural History Society of Palakkad, Palakkad 678 001, India; Sálim Ali Centre for Ornithology and Natural History, Anaikatty (Post), Coimbatore 641 108, India, IN
26 Sálim Ali Nature Forum, Coimbatore 641 108, India, IN
27 Western Ghats Hornbill Foundation, Extension Centre, MES Asmabi College, P. Vemballur, Thrissur 680 691, India, IN
28 Sálim Ali Nature Forum, Coimbatore 641 108, India; Sálim Ali Centre for Ornithology and Natural History, Anaikatty (Post), Coimbatore 641 108, India, IN
29 Natural History Society of Palakkad, Palakkad 678 001, India; Department of Wildlife Science, College of Forestry, Kerala Agricultural University, Thrissur 680 656, India, IN
30 Cochin Natural History Society, Revathi Bhavan, Edathala P. O., Aluva 683 561, India; Malappuram Birders, Tirur, Malappuram 676 101, India, IN
31 Pathanamthitta Birders, Pathanamthitta 689 645, India; Kottayam Nature Society, Sri Nilayam, Near Union Club, Kottayam 686 001, India, IN
32 WWF-India, CO Madhavan Road, Ayyankali Nagar, Kunnukuzhy, Thiruvananthapuram 695 035, India; Kole Birders Collective, Thrissur 680 555, India, IN