Diario del proyecto Lane County Wildflower Show Florablitz 2024

Archivos de diario de mayo 2024

13 de mayo de 2024

Upland Violets and Mountain Lions

The poster species for the 2024 Wildflower Festival is an attractive little plant that goes by a number of different names depending upon region and subspecies. The name upland yellow violet seems most appropriate for ours, Viola praemorsa ssp. praemorsa, as it is frequently found on hillsides. Though “yellow violet” sounds like an oxymoron, many North American species in the genus Viola exhibit yellow petals and several are found in western Oregon. Viola praemorsa is most easily differentiated by its fairly long, hairy, and ovate leaves which typically cluster around the base of the plant or extend upwards on petioles. Emily Poole has nicely illustrated the plant’s habit on this year’s Festival poster. Several hundred species of violets are known worldwide, and over two dozen can be found in Oregon. Viola is particularly interesting in that most species bear cleistogamous flowers–flowers that never open and are self-fertilized. Of course, violets also produce very showy flowers, some of which have been valued horticulturally. In Viola praemorsa, cleistogamous flowers are typically produced later in the season, following their showy, open-pollinated flowers. While one might expect that poor pollination would lead to an individual plant producing more self-fertilized flowers, a study was not able to find any correlation between pollination and the production of cleistogamous flowers. Another neat feature in the reproductive biology of violets is the production of seeds with an elaiosome, or a fleshy appendage that is rich in lipids and proteins. This elaiosome attracts ants, which harvest the seeds and carry them back to the nest to feed on. After the elaiosome is eaten, the seeds are transferred to the ants’ compost pile, providing an ideal location for germination. Elaiosomes have convergently evolved in a large number of plant species and locally are known from many woodland plants, including Trillum and bleeding hearts, all of which rely on ants for dispersal
The upland yellow violet is often associated with prairies, bluffs, and open woodlands, and can be found on Mount Pisgah in a handful of locations. Due to habitat loss from land use changes, reduction in fire frequency, and encroachment of conifers and other woody vegetation, this species has become somewhat rare in the Willamette Valley and has been listed as a species for review by the Oregon Biodiversity Information Center. Some of the Mount Pisgah locations for the upland yellow violet are near the summit ridge, where cougars (Puma concolor) are also occasionally seen by hikers. Cougars, also known as mountain lions, are extremely shy. Despite being resident on Mount Pisgah they are very infrequently encountered, and of the known encounters here, cougars have not displayed aggressive or concerning behavior. It is important to remember that we share Mount Pisgah with large predators, and it is good to know how to behave in the case of an encounter. It is also important to remember that cougar attacks are very rare. Cougar attacks have caused 28 documented fatalities in North America over the past 100 years, while cows kill about 20 people in the United States annually, mostly through trampling or kicking. In the 1960’s, overhunting had reduced Oregon’s cougar population to an estimated 200 individuals. A change in hunting regulations allowed for the population to rebound, and cougars are once again widespread across the state. These big cats are largely solitary, but recent research has suggested that they may lead more complex social lives than had previously been appreciated, including bonds formed during food-sharing, and it was found that food sharing was more common among cougars living within the territory of a dominant male. It is posited that over-hunting of cougars can disrupt these bonds and lead to more problem interactions with humans and livestock. Mount Pisgah is an important site for the conservation of a number of species that are now uncommon or rare in the Willamette Valley. Among these is the upland yellow violet. Mount Pisgah also helps to maintain the social connections of large mammals, humans and cougars alike.
– August Jackson, Interpretation Coordinator for Mt Pisgah Arboretum

Publicado el mayo 13, 2024 04:53 TARDE por ribes2018 ribes2018 | 0 comentarios | Deja un comentario

15 de mayo de 2024

What has been observed? Lane County Wildflower Flora Blitz observations from past years.

Thank you everyone for participating in this year’s Flora blitz leading up to the annual Mt Pisgah Arboretum Wildflower Festival. Since the beginning of the festival, in 1980, data on the number and diversity of plant species on display at the Festival has been recorded.

In 2020 we offered a virtual display of plant species in Lane County through iNaturalist observations. We have continued both the virtual and in -person display.

In the 2nd day of this year’s festival, 15 May, observations have been posted of 132 plant species! There are 3 more days to make observations. All wild plants of any size are counted, they don't have to be in bloom. It is nice to capture plants in flower bud or fruiting. With the nice weather I hope everyone ventures out to their favorite wildflower walks in Lane County and posts some observations. Right around Mt Pisgah and the surrounding Howard Buford Park Recreation Area are top wildflower viewing locations.

Have fun and see you all at the Festival.

DATE and # Plant Species Observed
2023 16-20 May: 458
2022 10-14 May: 368
2021 11-15 May: 470
2020 13-17 May: 393 1st Flora Blitz No in-person Festival

Publicado el mayo 15, 2024 10:10 TARDE por ribes2018 ribes2018 | 0 comentarios | Deja un comentario

17 de mayo de 2024

Daily Tally of Plant Species Observations: Day 4

5/15 366 plant observations have been posted of 132 species, Most Observed Species Tellima grandiflora

5/16/24 7am 593 observations of 205 spp, 63 observers, Most Observed Species Camassia leichtlinii

5/17 7am 1083 observations of 293 spp and 129 observers Most Observed Species
Iris tenax

The Flora Blitz continuers today and tomorrow

Publicado el mayo 17, 2024 02:06 TARDE por ribes2018 ribes2018 | 0 comentarios | Deja un comentario

18 de mayo de 2024

Daily Tally: Going into Day 5:

Observations continue to be posted ~Thank you everyone!

Today is the last day to make observations for this event, although you can post the observations well into the future. However, it would be nice to have most observation posted by 5/19 the day of the Festival.

5/18 7 am: 1601 observations of 365 Plant species.
Most Observed Species: Iris tenax with Trillium ovatum and Claytonia sibirica as very close seconds

Violets Anyone? Viola praemorsa, Upland yellow violet or Canary Violet. is our poster plant this year. See May 13 Journal post.

So far 7 species of Violets have been observed but in very low frequency.

Keep your eyes open and see you all at the Festival.

Publicado el mayo 18, 2024 02:27 TARDE por ribes2018 ribes2018 | 0 comentarios | Deja un comentario

19 de mayo de 2024

Festival Day: Morning Tally

Today at 7am: 2201 observations of 443 species for 180 observers Most observed species: Claytonia siberica (35 obs) followed by Tellima grandiflora & Iris tenax with 30 obs each.
To see the full tally of observations per species click on https://www.inaturalist.org/projects/lane-county-wildflower-show-florablitz-2024?tab=species
You can scroll down to the least observed species (5 observations or fewer)

Come to the festival and enjoy the display of labeled plants with their distribution maps, information about their pollinators and gardening potential and a table of experts to help identify plants (bring photos on your phone)

Publicado el mayo 19, 2024 01:59 TARDE por ribes2018 ribes2018 | 0 comentarios | Deja un comentario

20 de mayo de 2024

Event Tally ~ Almost Final Totals

This year we have surpassed the totals in ALL categories from previous years.

2536 observations of 489 plant species by 193 observers! Claytonia sibirica so far is the most observed species.

Observations are still being posted so final counts will probably be established over the next month. Also 50% of the observations still need to be identified to “Research Grade” and that takes time. Your help as an identifier will be much appreciated if you feel you have the expertise to “suggest an identification”, even to plant family or genus.

Right now, there are 118 Identifiers who have assisted and a VERY big thank you goes to August Jackson who has worked to identify 165 observations this past week. August has been the Mt Pisgah Arboretum’s Interpretation Coordinator since 2013, starting as a site assistant in 2011. He will be changing roles, recently the Oregon Bee Atlas recruited August to coordinate a program for the inventory and monitoring of bees on National Wildlife Refuges in our region.

Thank you to every observer for foraging out to all corners of Lane County Oregon and make observations of the amazing plant diversity and beauty we all enjoy and now share with the iNaturalist community globally. You can view the OVERVIEW section of this project, scroll down and take a look at the map to see where observations have been made.

Publicado el mayo 20, 2024 02:31 TARDE por ribes2018 ribes2018 | 0 comentarios | Deja un comentario