35 research outputs found
Pollination of Pagamea duckei Standl. (Rubiaceae): a functionally dioecious species
The floral biology, pollination and breeding system of Pagamea duckei Standl. (Rubiaceae) were studied at the Reserva Biológica da Campina, Manaus, Amazonas, Brazil. Floral morphology suggested that P. duckei is a distylous species. However, crossing experiments revealed that it is functionally dioecious. The flowers are actinomorphic, yellowish, produce nectar and a sweet odor, which is more intense in the morning. Anthesis started in the morning between 5.00 and 6.00 AM and extended until dusk, when the corolla tube abscissed. The flowers were visited mostly by bees of the genus Melipona. Pagamea duckei is not agamospermic and thus needs pollen vectors for effective pollination. The results of this study strengthen the idea that, in Pagamea, species with distylous flower morphology are actually functionally dioecious
Recovery of dialysis patients with COVID-19 : health outcomes 3 months after diagnosis in ERACODA
Background. Coronavirus disease 2019 (COVID-19)-related short-term mortality is high in dialysis patients, but longer-term outcomes are largely unknown. We therefore assessed patient recovery in a large cohort of dialysis patients 3 months after their COVID-19 diagnosis. Methods. We analyzed data on dialysis patients diagnosed with COVID-19 from 1 February 2020 to 31 March 2021 from the European Renal Association COVID-19 Database (ERACODA). The outcomes studied were patient survival, residence and functional and mental health status (estimated by their treating physician) 3 months after COVID-19 diagnosis. Complete follow-up data were available for 854 surviving patients. Patient characteristics associated with recovery were analyzed using logistic regression. Results. In 2449 hemodialysis patients (mean ± SD age 67.5 ± 14.4 years, 62% male), survival probabilities at 3 months after COVID-19 diagnosis were 90% for nonhospitalized patients (n = 1087), 73% for patients admitted to the hospital but not to an intensive care unit (ICU) (n = 1165) and 40% for those admitted to an ICU (n = 197). Patient survival hardly decreased between 28 days and 3 months after COVID-19 diagnosis. At 3 months, 87% functioned at their pre-existent functional and 94% at their pre-existent mental level. Only few of the surviving patients were still admitted to the hospital (0.8-6.3%) or a nursing home (∼5%). A higher age and frailty score at presentation and ICU admission were associated with worse functional outcome. Conclusions. Mortality between 28 days and 3 months after COVID-19 diagnosis was low and the majority of patients who survived COVID-19 recovered to their pre-existent functional and mental health level at 3 months after diagnosis
Learning to Use Discourse Analysis on a Professional Psychology Training Programme: Accounts of Supervisees and a Supervisor
The role and contribution of farm wives on farms in Northern Ireland
SIGLEAvailable from British Library Document Supply Centre-DSC:DXN016917 / BLDSC - British Library Document Supply CentreGBUnited Kingdo
Germination of Sophora seeds after prolonged storage
Germination of Sophora seeds 24–40
years old from New Zealand (8 species), Chile (2
species), Lord Howe Island (1 species), and Hawai’i
(1 species), and of fresh seed from trees established
using seeds from the same seed lots, was assessed.
Germination was rapid for most seed lots, with, on
average, fresh seed having high germination (77–
94%) and stored seed low germination (0–40%).
Exceptions to this were old S. chrysophylla seed,
which had unusually high germination (84%), and
fresh S. longicarinata seed, which had unusually low
germination (24%). The results provide further support
for the role of long-distance oceanic dispersal
for the distribution of Sophora sect. Edwardsia
around the Southern Hemisphere, and also suggest that long-term seed storage could be used for the ex
situ management of Sophora populations. The results
also highlight some intriguing ecological correlates
of germination that warrant further study
Threatened and uncommon plants of New Zealand
A reappraisal of the conservation status
of the indigenous New Zealand vascular plant flora
is presented. The list comprises 792 taxa (34% of
New Zealand’s total indigenous vascular flora) in the
following categories: Extinct 4 taxa, Acutely Threatened
122 taxa (comprising 47 taxa Nationally Critical,
54 Nationally Endangered, 21 Nationally
Vulnerable), Chronically Threatened 96 taxa (comprising
Serious Decline 26 taxa, Gradual Decline 70
taxa), At Risk 499 taxa (comprising Sparse 126 taxa,
Range Restricted 373 taxa), Non-resident Native 26
taxa (comprising Vagrant 16 taxa, Colonist 10 taxa),
and Data Deficient 45 taxa. A further 208 plants are
listed as Taxonomically Indeterminate, being those
which might warrant further conservation attention
once their taxonomic status is clarified. A further 31
named taxa and 18 rated as Taxonomically Indeterminate,
and previously considered to be threatened
and/or uncommon, are removed from this updated
listing. A concordance of plant names is provided.
The lists presented use a new threat classification
system developed by the New Zealand Department
of Conservation for sole use within this country. This
paper represents the first time the entire known
indigenous vascular flora has been assessed from a
conservation perspective since the mid 1970s.
A brief analysis of the patterns of rarity exhibited by
the taxa listed is presented