Variation for the ? 15 Letter beliefs certainly reproduction territories differed according on hottie-rearing period (Fig 4)
This new communications ranging from breeding nest and you can hatching time showed that brand new change in ? thirteen C beliefs with hatching timing ranged one of breeding territories. Only when go to this web-site you look at the Suhaam, ? 13 C philosophy out-of girls improved 0.twenty-four ± 0.07‰ every single day (0.10–0.38‰/day) across the hottie-rearing several months, while there’s zero proof change on the most other territories (Gujido: -0.04 ± 0.10‰/day -0.24–0.15‰/day; Namdongji: 0.02 ± 0.06‰/time -0.10–0.13‰/day; Chilsando: -0.05 ± 0.09‰/day, -0.23–0.12‰/day).
To possess ? fifteen N, the full design differed rather regarding the null design (? 2 = , df = twelve, p dos = 8.54, df = step three, p = 0.036) and breeding colony and you will hatching big date (? dos = nine.23, df = step three, p = 0.026), while the communication between chick-rearing several months and you will hatching big date for ? 15 Letter wasn’t significant (? dos = 1.09, df = 1, p = 0.292; S2 Dining table). The low model indicated that ? 15 N opinions of girls differed anywhere between chick-rearing periods simply in the girls during the Chilsando, where ? fifteen N viewpoints to your late chick-rearing months was step one.01 ± 0.33‰ down (0.33–step one.68‰) than others in early chick-rearing months (Fig cuatro). There is certainly no proof a distinction when you look at the ? 15 N thinking between hottie-rearing symptoms within other colonies (Gujido: -0.04 ± 0.45‰, -0.95–0.88‰; Suhaam: -0.01 ± 0.39‰, -0.81–0.77‰; Namdongji: -0.twenty five ± 0.42‰, -step 1.10–0.59‰; Fig cuatro). For the very early hottie-rearing seasons, the latest feathers of girls on Gujido had the reasonable ? 15 N opinions (11.8 ± 0.41‰); one of several other three colonies, new ? 15 Letter thinking away from girls during the Chilsando (sixteen.3 ± 0.41‰) had been significantly higher than those on Suhaam (14.8 ± 0.30‰) and you will Namdonji (fourteen.9 ± 0.34‰). To the late chick-rearing seasons, ? fifteen Letter viewpoints from chicks were straight down during the Gujido (eleven.8 ± 0.41‰) than just on most other breeding territories, there are no change among the almost every other colonies (Suhaam: fourteen.8 ± 0.30‰, Namdonji: 15.dos ± 0.34‰, Chilsando: fifteen.step 3 ± 0.24‰; Fig 4).
We don’t come across supportive proof towards improvement in ? 15 N thinking by the hatching big date away from chicks in every reproduction colony (Gujido: 0.01 ± 0.07‰/big date -0.06–0.09 ‰/day; Suhaam: 0.04 ± 0.03‰/day, -0.01–0.09 ‰/day; Namdongji: -0.03 ± 0.02‰/go out, -0.07–0.01 ‰/day; Chilsando: -0.06 ± 0.03‰/go out, -0.13–0.01 ‰/day).
This new Bayesian collection design and additionally displayed a good spatial difference in eating plan have fun with between reproduction territories (Fig 5), and this showed that the diet program structure regarding spoonbill girls at Gujido try primarily distinctive from you to definitely in other breeding territories. Even with freshwater wetlands not being designed for foraging in the area (Fig step one, Dining table step 1), girls at Gujido was in fact given nearly totally freshwater diet (>79%) both in a long time, and they diet were reigned over of the freshwater invertebrates (Fig 5). Likewise, most other communities that will availableness freshwater wetlands and you can intertidal parts used both marine and you may freshwater eating source from the a similar rate throughout the the brand new hottie-rearing months (Fig 5). The fresh design showed that chicks during the Chilsando were provided with freshwater and you may marine seafood in early blog post-hatching period than other territories (Fig 5). On the other hand, there’s highest convergence from estimated eating plan efforts within very early and you can late chick-rearing symptoms (Fig 5).
Dialogue
More popular wanting try your ratio away from freshwater diets try high in the Gujido, in which no freshwater wetlands are for sale to foraging in regular foraging range (eleven kilometer regarding nest). As well, during the almost every other territories found close to the coast, plus Suhaam, Namdongji, and you can Chilsando, grownups fed the girls with prey out of intertidal mudflats and you will freshwater wetlands in the the same rate. So it result is inside agreement that have those of previous records, and this indicated that the new adults at the other offshore countries don’t feed into the close intertidal apartments however, of way more faraway freshwater wetlands rather, when you find yourself people at inshore islands utilized both habitats. This type of overall performance together with validate the brand new conclusions off earlier in the day records indicating you to the fresh new diet out of girls inside the offshore colonies mainly originated from freshwater habitats [17, 18]. For temporary improvement in the newest proportion regarding freshwater dieting, the studies indicated that ? thirteen C values, that have been used to view eating plan size out of freshwater and you will intertidal wetlands, had been higher at the beginning of chick-rearing several months than just when you look at the late chick-rearing period. As well, ? 13 C values to have Suhaam enhanced together with hatching timing. These efficiency indicate that, inside Suhaam, the freshwater diet ratio regarding chicks might be high during the very early hottie-rearing year compared to later chick-rearing months, while early-breeding spoonbills you’ll feed the chicks with an increase of freshwater target than just spoonbills breeding later. These answers are consistent with before findings held on the coastal parts to Suhaam, and therefore indicated that the number of spoonbills foraging from inside the grain paddies decreased along side hottie-rearing seasons from the coastal urban area doing Suhaam [17, thirty six, 78].
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