scholarly journals Relationship between seed retention time in bird's gut and fruit characteristics

2003 ◽  
Vol 2 (1) ◽  
pp. 41-48 ◽  
Author(s):  
Akiko Fukui
Keyword(s):  
Retention Time ◽  
Fruit Characteristics ◽  
Seed Retention ◽  
Seed Retention Time

Allometric scaling of seed retention time in seed dispersers and its application to estimation of seed dispersal potentials of theropod dinosaurs

Oikos ◽  
2019 ◽  
Vol 128 (6) ◽  
pp. 836-844 ◽  
Author(s):  
Tetsuro Yoshikawa ◽  
Kazuto Kawakami ◽  
Takashi Masaki
Keyword(s):  
Seed Dispersal ◽  
Retention Time ◽  
Allometric Scaling ◽  
Theropod Dinosaurs ◽  
Seed Retention ◽  
Seed Dispersers ◽  
Seed Retention Time

scholarly journals Long seed dispersal distances by an inquisitive flightless rail ( Gallirallus australis ) are reduced by interaction with humans

2019 ◽  
Vol 6 (8) ◽  
pp. 190397
Author(s):  
Joanna K. Carpenter ◽  
Colin F. J. O'Donnell ◽  
Elena Moltchanova ◽  
Dave Kelly
Keyword(s):  
Seed Dispersal ◽  
Mechanistic Model ◽  
Human Interaction ◽  
Time Data ◽  
Seed Retention ◽  
Function Loss ◽  
The Mean ◽  
Human Use ◽  
Dispersal Distances ◽  
Seed Retention Time

Human presence is becoming increasingly ubiquitous, but the influence this has on the seed dispersal services performed by frugivorous animals is largely unknown. The New Zealand weka ( Gallirallus australis ) is an inquisitive flightless rail that frequently congregates in areas of high human use. Weka are important seed dispersers, yet the seed dispersal services they provide are still poorly understood. We estimated seed dispersal distances of weka for two plant species ( Prumnopitys ferruginea and Elaeocarpus dentatus ) and tested how human interaction affected these dispersal distances. We estimated weka seed dispersal distances by combining GPS data from 39 weka over three sites with weka seed retention time data in a mechanistic model. The mean seed retention times were extremely long (38–125 h). Weka were highly effective dispersers, dispersing 93–96% of seeds away from parent canopies, and 1% of seeds over 1 km. However, we found evidence of a significant human impact on the seed dispersal distances of weka, with birds occupying areas of high human use performing 34.8–40.9% shorter distances than their more remote counterparts. This represents an example of cryptic function loss, where although weka are still present in the ecosystem, their seed dispersal services are impaired by human interaction.

scholarly journals How far might plant-eating dinosaurs have moved seeds?

2021 ◽  
Vol 17 (1) ◽  
pp. 20200689
Author(s):  
George L. W. Perry
Keyword(s):  
Seed Dispersal ◽  
Body Mass ◽  
Dispersal Distance ◽  
Movement Speed ◽  
Gut Contents ◽  
Allometric Relationship ◽  
Seed Retention ◽  
Dispersal Distances ◽  
Seed Retention Time ◽  
Seed Dispersal Distance

Fossilized gut contents suggest that seeds consumed by dinosaurs may have remained intact in their stomachs, and since seed dispersal distance increases with body-mass in extant vertebrates, dinosaurs may have moved seeds long distances. I simulated seed dispersal by dinosaurs across body-masses from 1 × 10 1 to 8 × 10 4 kg using allometric random walk models, informed by relationships between (i) body-mass and movement speed, and (ii) body-mass and seed retention time. Seed dispersal distances showed a hump-shaped relationship with body-mass, reflecting the allometric relationship between maximum movement speed and body-mass. Across a range of assumptions and parameterizations, the simulations suggest that plant-eating dinosaurs could have dispersed seeds long distances.

Effect of Low-temperature Periods on Fruit Characteristics of ‘Le Lectier’ Pears during Ripening

2010 ◽  
Vol 9 (2) ◽  
pp. 235-241 ◽  
Author(s):  
Shuji Chino ◽  
Mikako Tokuda ◽  
Tomomi Ohishi ◽  
Kazuhiro Koshikizawa ◽  
Yuuki Ohta ◽  
...  
Keyword(s):  
Low Temperature ◽  
Fruit Characteristics

Impact of Metal Pad Etch-Induced Plasma Damage on Dynamic Retention Time Degradation during High Temperature Stress in High Density DRAM Technology

2005 ◽  
Author(s):  
D-J Kim ◽  
I-G Kim ◽  
J-Y Noh ◽  
H-J Lee ◽  
S-H Park ◽  
...  
Keyword(s):  
High Temperature ◽  
Temperature Stress ◽  
Retention Time ◽  
High Temperature Stress ◽  
High Density ◽  
Cell Junction ◽  
Antenna Effect ◽  
Plasma Damage ◽  
Root Cause ◽  
Wafer Processing

Abstract As DRAM technology extends into 12-inch diameter wafer processing, plasma-induced wafer charging is a serious problem in DRAM volume manufacture. There are currently no comprehensive reports on the potential impact of plasma damage on high density DRAM reliability. In this paper, the possible effects of floating potential at the source/drain junction of cell transistor during high-field charge injection are reported, and regarded as high-priority issues to further understand charging damage during the metal pad etching. The degradation of block edge dynamic retention time during high temperature stress, not consistent with typical reliability degradation model, is analyzed. Additionally, in order to meet the satisfactory reliability level in volume manufacture of high density DRAM technology, the paper provides the guidelines with respect to plasma damage. Unlike conventional model as gate antenna effect, the cell junction damage by the exposure of dummy BL pad to plasma, was revealed as root cause.

Prediction of peptide retention time in reversed-phase liquid chromatography and its application in protein identification

2010 ◽  
Vol 28 (6) ◽  
pp. 529-534
Author(s):  
Chao LIU ◽  
Haipeng WANG ◽  
Yan FU ◽  
Zuofei YUAN ◽  
Hao CHI ◽  
...  
Keyword(s):  
Liquid Chromatography ◽  
Retention Time ◽  
Protein Identification ◽  
Reversed Phase ◽  
Reversed Phase Liquid Chromatography ◽  
Phase Liquid

Studies on Chromatographic Fractioning by Cations Exchangers of a Bovine Hemoglobin Hydrolysate

2018 ◽  
Vol 69 (10) ◽  
pp. 2794-2798
Author(s):  
Alina Diana Panainte ◽  
Ionela Daniela Morariu ◽  
Nela Bibire ◽  
Madalina Vieriu ◽  
Gladiola Tantaru ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Amino Acids ◽  
Retention Time ◽  
Chromatographic Separation ◽  
Bovine Hemoglobin ◽  
Reverse Phase ◽  
Hplc System ◽  
Fast Flow ◽  
Hydrolysis Of ◽  
Phase Column

A peptidic hydrolysate has been obtained through hydrolysis of bovine hemoglobin using pepsin. The fractioning of the hydrolysate was performed on a column packed with CM-Sepharose Fast Flow. The hydrolysate and each fraction was filtered and then injected into a HPLC system equipped with a Vydak C4 reverse phase column (0.46 x 25 cm), suitable for the chromatographic separation of large peptides with 20 to 30 amino acids. The detection was done using mass spectrometry, and the retention time, size and distribution of the peptides were determined.

Combining Abilities of Creeping Foxtail Parents Selected for Seed Retention

Crop Science ◽  
1991 ◽  
Vol 31 (3) ◽  
pp. 624-625 ◽  
Author(s):  
A. Boe ◽  
J. G. Ross
Keyword(s):  
Combining Abilities ◽  
Seed Retention

Effect of Preharvest Sitofex Spraying on Yield and Fruit Characteristics of "Kelsey" Plum during Cold Storage

2019 ◽  
Vol 64 (6) ◽  
pp. 427-438
Author(s):  
H.A. Ennab ◽  
M.A. El Shemy M.A. ◽  
Okba S.K.
Keyword(s):  
Cold Storage ◽  
Fruit Characteristics
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