Dugong grazing and turtle cropping: Grazing optimization in tropical seagrass systems?

Oecologia

Volumn 149, Issue 4, 2006, Pages 635-647

  Aragones, Lemnuel V ^a,b   Lawler, Ivan R ^a   Foley, William J ^a,c   Marsh, Helene ^a  

^a JAMES COOK UNIVERSITY   (Australia)

^b UNIVERSITY OF MIAMI   (United States)

^c AUSTRALIAN NATIONAL UNIVERSITY   (Australia)

Author keywords

Cymodocea; Green turtle; Halodule; Halophila; Nutritional quality; Zostera

Indexed keywords

LIGNIN; NITROGEN;

CHEMICAL COMPOSITION; CROPPING PRACTICE; GRAZING; INFRARED SPECTROSCOPY; LIGHT EFFECT; MARINE MAMMAL; NUTRITIVE VALUE; OPTIMIZATION; REGROWTH; SEAGRASS; TURTLE;

ANIMAL; ARTICLE; AUSTRALIA; CARBOHYDRATE METABOLISM; DIETARY FIBER; DUGONG; FEEDING BEHAVIOR; FOOD CHAIN; GROWTH, DEVELOPMENT AND AGING; METABOLISM; PACIFIC OCEAN; PLANT; PLANT LEAF; TROPIC CLIMATE; TURTLE;

ANIMALS; CARBOHYDRATE METABOLISM; DIETARY FIBER; DUGONG; FEEDING BEHAVIOR; FOOD CHAIN; LIGNIN; NITROGEN; PACIFIC OCEAN; PLANT LEAVES; PLANTS; QUEENSLAND; TROPICAL CLIMATE; TURTLES;

AUSTRALASIA; AUSTRALIA; QUEENSLAND;

CYMODOCEA; CYMODOCEA ROTUNDATA; HALODULE; HALODULE UNINERVIS; HALOPHILA; HALOPHILA OVALIS; TESTUDINES; ZOSTERA; ZOSTERA CAPRICORNI;

EID: 33748924346     PISSN: 00298549     EISSN: None     Source Type: Journal    
DOI: 10.1007/s00442-006-0477-1     Document Type: Article

References (56)

1. Adler PB, Milchunas DG, Sala OE, Burke IC, Lauenroth WK (2005) Plant traits and ecosystem grazing effects: Comparison of US sagebrush steppe and Patagonian steppe. Ecol Appl 15:774-792
2. Aketa K, Kawamura A (2001) Digestive functions in Sirenians (Review). Bull Fac Bioresour 27:85-103
3. Aketa K, Asano S, Wakai Y, Kawamura A (2001) Apparent digestibility of eelgrass in dugongs (Dugong dugon). Honyurui Kagaku (Mammalian Science) 41:23-34
4. Anderson PK (1994) Dugong distribution, the seagrass Halophila spinulosa, and thermal environment in winter in deeper waters of eastern Shark Bay, Western Australia. Wildl Res 21:381-388
5. Anderson PK (1998) Shark Bay dugongs (Dugong dugon) in summer II: foragers in a Halodule-dominated community. Mammalia 62:409-425
6. Anderson PK, Birtles A (1978) Behaviour and ecology of the dugong, Dugong dugon (Sirenia): observations in Shoalwater and Cleveland Bays, Queensland. Aust Wildl Res 5:1-23
7. André J, Lawler IR (2003) Near infrared spectroscopy as a rapid and inexpensive means of dietary analysis for a marine herbivore, dugong Dugong dugon. Mar Ecol Prog Ser 257:259-266
8. André J, Gyuris E, Lawler IR (2005) Comparison of the diets of sympatric dugongs and green turtles on the Orman Reefs, Torres Strait, Australia. Wildl Res 32:53-62
9. Aragones LV (1994) Observations on dugongs at Calauit Island, Busuanga, Palawan, Philippines. Wildl Res 21:709-717
10. Aragones L, Marsh H (2000) Impact of dugong grazing and turtle cropping on tropical seagrass communities. Pac Conserv Biol 5:277-288
11. ASTM (1995) Standard practices for infrared multivariate quantitative analysis (designation E1655-00). American Society for Testing and Materials, West Conshohocken, PA
12. Augustine DJ, McNaughton SJ (1998) Ungulate effects on the functional species composition of plant communities: herbivore selectivity and plant tolerance. J Wildl Manage 62:1165-1183
13. Augustine DJ, McNaughton SJ, Frank DA (2003) Feedbacks between soil nutrients and large herbivores in a managed savanna ecosystem. Ecol Appl 13:1325-1337
14. Bjorndal KA (1980) Nutrition and grazing behaviour of the green turtle Chelonia mydas. Mar Biol 56:147-154
15. Bjorndal KA, Bolten AB, Chaloupka MY (2000) Green turtle somatic growth model: evidence for density dependence. Ecol Appl 10:269-282
16. Brand SJ, Lanyon JM, Limpus CJ (1999) Digesta composition and retention times in wild immature green turtles, Chelonia mydas: a preliminary investigation. Mar Freshw Res 50:145-147
17. Bryant JP (2003) Winter browsing on Alaska feltleaf willow twigs improves leaf nutritional value for snowshoe hares in summer. Oikos 102:25-32
18. Chapman DF, Robson MJ, Snaydon RW (1992) Interactions between defoliation and the nitrogen nutrition of White Clover (Trifolium repens L.) - effects on carbon utilization in clonal plants. Plant Soil 139:157-165
19. Choo GM, Waterman PG, McKey DB, Gartlan JS (1981) A simple enzyme assay for dry matter digestibility and its value in studying food selection by generalist herbivores. Oecologia 49:170-178
20. Dawes CJ, Lawrence JM (1979) Effects of blade removal on the proximate composition of the rhizome of the seagrass Thalassia testudinum Banks ex Konig. Aquat Bot 7:255-266
21. De Mazancourt C, Loreau M, Abbadie L (1998) Grazing optimization and nutrient cycling: when do herbivores enhance plant production? Ecology 79:2242-2252
22. Foley WJ (1992) Nitrogen and energy retention and acid-base status in the common ringtail possum (Pseudocheirus peregrinus): evidence of the effects of absorbed allelochemicals. Physiol Zool 65:403-421
23. Foley WJ, McIlwee AP, Lawler IR, Aragones L, Woolnough AP, Berding N (1998) Ecological applications of near infrared spectroscopy - a tool for rapid, cost-effective prediction of the composition of plant and animal tissues and aspects of animal performance. Oecologia 116:293-305
24. Green RA, Detling JK (2000) Defoliation-induced enhancement of total aboveground nitrogen yield of grasses. Oikos 91:280-284
25. Hamilton EW, Giovannini MS, Moses SA, Coleman JS, McNaughton SJ (1998) Biomass and mineral element responses of a Serengeti short-grass species to nitrogen supply and defoliation: compensation requires a critical N. Oecologia 116:407-418
26. Heinsohn GE, Birch WR (1972) Foods and feeding habits of the dugong, Dugong dugong (Erlxlben), in Northern Queensland, Australia. Mammalia 36:412-422
27. Hik DS, Sadul HA, Jefferies RL (1991) Effects of the timing of multiple grazings by geese on net aboveground primary production of Swards of Puccinellia phryganodes. J Ecol 79:715-730
28. Hobbs NT (1996) Modification of ecosystems by ungulates. J Wildl Manage 60:695-713
29. de Iongh HH (1996) Plant-herbivore interactions between seagrasses and dugongs in a tropical small island ecosystem. PhD Thesis, Catholic University Nijmegen, The Netherlands
30. de Iongh HH, Wenno BJ, Meelis E (1995) Seagrass distribution and seasonal biomass changes in relation to dugong grazing in the Moluccas, East Indonesia. Aquat Bot 50:1-19
31. Jackson JBC (1997) Reefs since Columbus. Coral Reefs 16(Suppl):S23-S32
32. Jackson JB, Kirby MX, Berger WH, Bjorndal KA, Botsford LW, Bourque BJ, Bradbury RH, Cooke R, Erlandson J, Estes JA, Hughes TP, Kidwell S, Lange CB, Lenihan HS, Pandolfi JM, Peterson CH, Steneck RS, Tegner MJ, Warner RR (2001) Historical overfishing and the recent collapse of coastal ecosystems. Science 293:629-638
33. Jermyn MA (1975) Increasing the sensitivity of the anthrone method for carbohydrate. Anal Biochem 68:332-335
34. Komarek AR (1994) Comparison of the filter bag technique to conventional filtration in the Van Soest NDF analysis of 21 feeds. In: Proc National Conf on Forage Quality, Evaluation, and Utilization, 13-15 Apr 1994, University of Nebraska, Lincoln, NE
35. Lanyon J (1991) The nutritional ecology of the dugong (Dugong dugon) in tropical North Queensland. PhD thesis, Department of Ecology and Evolutionary Biology, Monash University, Melbourne
36. Lanyon JM, Marsh H (1995) Digesta passage times in the dugong. Aust J Zool 43:119-127
37. Lanyon JM, Limpus CJ, Marsh H (1989) Dugongs and turtles: grazers in the seagrass systm. In: Shepherd S (ed) Aquatic plant studies 2: biology of seagrasses with special reference to the Australian region. Elsevier, Amsterdam, pp 610-634
38. Lawler IR, Aragones LV, Berding N, Marsh H, Foley W (2006) Near infrared reflectance spectroscopy is a rapid, cost-effective predictor of seagrass nutrients. J Chem Ecol 32:1353-1365
39. Marsh H, Channels PW, Heinsohn GE, Morrissey J (1982) Analysis of stomach contents of dugongs from Queensland. Aust Wildl Res 9:55-67
40. Marsh H, De'ath G, Gribble N, Lane B (2005) Historical marine population estimates: triggers or targets for conservation? The dugong case study. Ecol Appl 15:481-492
41. Masini RJ, Anderson PK, McComb AJ (2001) A Halodule-dominated community in a subtropical embayment: physical environment, productivity, biomass, and impact of dugong grazing. Aquat Bot 71:179-197
42. McNaughton SJ, Banyikwa FF, McNaughton MM (1997) Promotion of the cycling of diet-enhancing nutrients by African grazers. Science 278:1798-1800
43. Milchunas DG, Lauenroth WK (1993) Quantitative effects of grazing on vegetation and soils over a global range of environments. Ecol Monogr 63:327-366
44. Murray RM, Marsh H, Heinsohn G, Spain AV (1977) The role of the midgut caecum and large intestine in the digestion of sea grasses by the dugong. Comp Biochem Physiol 56A:7-10
45. Nolet BA (2004) Overcompensation and grazing optimisation in a swan-pondweed system? Freshw Biol 49:1391-1399
46. Perry CJ, Dennison WC (1996) Effects of dugong grazing on microbial processes in seagrass sediments. In: Kuo J, Phillips RC, Walker D, Kirkman H (eds) Seagrass biology: Proceedings of an international workshop. University of Western Australia Faculty of Science, Nedlands, Australia
47. Perry CJ, Dennison WC (1999) Microbial nutrient cycling in seagrass sediments. AGSO J Aust Geol Geophys 17:227-231
48. Preen AR (1993) Interactions between dugongs and seagrasses in a subtropical environment. PhD thesis, Zoology Department, James Cook University, Townsville, Australia
49. Preen A (1995) Impacts of dugong foraging on seagrass habitats - observational and experimental evidence for cultivation grazing. Mar Ecol Prog Ser 124:201-213
50. Radojevic I, Simpson RJ, St. John JA, Humphreys MO (1994) Chemical composition and in vitro digestibility of lines of Lolium perenne selected for high concentrations of water-soluble carbohydrates. Aust J Agric Res 45:901-912
51. Shenk JS, Westerhaus MO (1991) Population definition, sample selection and calibration procedures for near infrared reflectance spectroscopy. Crop Sci 31:469-474
52. Shenk JS, Westerhaus MO (1994) The application of near infrared spectroscopy (NIRS) to forage analysis. In: Fahey GCJ, Mosser LE, Mertens DR, Collins M (eds) National Conference on Forage Quality Evaluation and Utilization. American Society of Agronomy Inc Crop Science Society of America Inc. and Soil Science Society of America Inc., Madison, WI, pp 406-449
53. Supanwanid C (1996) Recovery of the seagrass Halophila ovalis after grazing by dugong. In: Kuo H, Phillips RC, Walker DI, Kirkman H (eds) Seagrass biology. Rottnest Island, Western Australia, pp 315-318
54. Van Soest PJ, Robertson JB, Lewis BA (1991) Methods for dietary fiber, neutral detergent fiber and non-starch polysaccharides in relation to animal nutrition. J Dairy Sci 74:3583-3597
55. Yamamuro M, Chirapart A (2005) Quality of the seagrass Halophila ovalis on a Thai intertidal flat as food for the dugong. J Oceanogr 61:183-186
56. Zieman JC, Iverson RL, Ogden JC (1984) Herbivory effects on Thalassia testudinum leaf growth and nitrogen content. Mar Ecol Prog Ser 15:151-158